Home / 868,387.60-1,302,581.40-720,931.60

Finding the Fourth Proportional to 868,387.60, 1,302,581.40 and 720,931.60

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Solution

The fourth proportional to 868,387.60, 1,302,581.40 and 720,931.60 is: 1,081,397.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    868,387.60 : 1,302,581.40 = 720,931.60 : x
  2. Step 2: Convert to fraction form
    868,387.60/1,302,581.40 = 720,931.60/x
  3. Step 3: Cross multiply
    868,387.60x = 1,302,581.40 × 720,931.60
  4. Step 4: Simplify right side
    868,387.60x = 939,072,092,832.24
  5. Step 5: Solve for x
    x = 939,072,092,832.24/868,387.60
  6. Step 6: Final answer
    x = 1,081,397.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.