Home / 872,688.09-1,204,419.23-490,712.13

Finding the Fourth Proportional to 872,688.09, 1,204,419.23 and 490,712.13

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Solution

The fourth proportional to 872,688.09, 1,204,419.23 and 490,712.13 is: 677,244.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    872,688.09 : 1,204,419.23 = 490,712.13 : x
  2. Step 2: Convert to fraction form
    872,688.09/1,204,419.23 = 490,712.13/x
  3. Step 3: Cross multiply
    872,688.09x = 1,204,419.23 × 490,712.13
  4. Step 4: Simplify right side
    872,688.09x = 591,023,125,766.26
  5. Step 5: Solve for x
    x = 591,023,125,766.26/872,688.09
  6. Step 6: Final answer
    x = 677,244.40

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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.