Home / 786,742.80-1,085,693.40-442,552.74

Finding the Fourth Proportional to 786,742.80, 1,085,693.40 and 442,552.74

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Solution

The fourth proportional to 786,742.80, 1,085,693.40 and 442,552.74 is: 610,716.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    786,742.80 : 1,085,693.40 = 442,552.74 : x
  2. Step 2: Convert to fraction form
    786,742.80/1,085,693.40 = 442,552.74/x
  3. Step 3: Cross multiply
    786,742.80x = 1,085,693.40 × 442,552.74
  4. Step 4: Simplify right side
    786,742.80x = 480,476,588,969.92
  5. Step 5: Solve for x
    x = 480,476,588,969.92/786,742.80
  6. Step 6: Final answer
    x = 610,716.22

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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.