Home / 1,281,418,776.58-1,768,426,571.94-716,869,980.28

Finding the Fourth Proportional to 1,281,418,776.58, 1,768,426,571.94 and 716,869,980.28

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Solution

The fourth proportional to 1,281,418,776.58, 1,768,426,571.94 and 716,869,980.28 is: 989,318,983.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,281,418,776.58 : 1,768,426,571.94 = 716,869,980.28 : x
  2. Step 2: Convert to fraction form
    1,281,418,776.58/1,768,426,571.94 = 716,869,980.28/x
  3. Step 3: Cross multiply
    1,281,418,776.58x = 1,768,426,571.94 × 716,869,980.28
  4. Step 4: Simplify right side
    1,281,418,776.58x = 1,267,731,921,753,255,680
  5. Step 5: Solve for x
    x = 1,267,731,921,753,255,680/1,281,418,776.58
  6. Step 6: Final answer
    x = 989,318,983.71

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Double scale
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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.