Home / 1,287,007.60-1,931,202.60-539,129.20

Finding the Fourth Proportional to 1,287,007.60, 1,931,202.60 and 539,129.20

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Solution

The fourth proportional to 1,287,007.60, 1,931,202.60 and 539,129.20 is: 808,983.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,287,007.60 : 1,931,202.60 = 539,129.20 : x
  2. Step 2: Convert to fraction form
    1,287,007.60/1,931,202.60 = 539,129.20/x
  3. Step 3: Cross multiply
    1,287,007.60x = 1,931,202.60 × 539,129.20
  4. Step 4: Simplify right side
    1,287,007.60x = 1,041,167,712,775.92
  5. Step 5: Solve for x
    x = 1,041,167,712,775.92/1,287,007.60
  6. Step 6: Final answer
    x = 808,983.34

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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.