Home / 1,200,741,289.84-1,656,932,508.05-730,790,670.74

Finding the Fourth Proportional to 1,200,741,289.84, 1,656,932,508.05 and 730,790,670.74

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Solution

The fourth proportional to 1,200,741,289.84, 1,656,932,508.05 and 730,790,670.74 is: 1,008,436,062.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,200,741,289.84 : 1,656,932,508.05 = 730,790,670.74 : x
  2. Step 2: Convert to fraction form
    1,200,741,289.84/1,656,932,508.05 = 730,790,670.74/x
  3. Step 3: Cross multiply
    1,200,741,289.84x = 1,656,932,508.05 × 730,790,670.74
  4. Step 4: Simplify right side
    1,200,741,289.84x = 1,210,870,818,928,255,744
  5. Step 5: Solve for x
    x = 1,210,870,818,928,255,744/1,200,741,289.84
  6. Step 6: Final answer
    x = 1,008,436,062.94

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Double scale
Find fourth proportional to 1,200,741,290.84, 1,656,932,509.43 and 730,790,671.74
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.