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Finding the Fourth Proportional to 539,360.78, 807,779.72 and 426,282.08

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Solution

The fourth proportional to 539,360.78, 807,779.72 and 426,282.08 is: 638,426.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,360.78 : 807,779.72 = 426,282.08 : x
  2. Step 2: Convert to fraction form
    539,360.78/807,779.72 = 426,282.08/x
  3. Step 3: Cross multiply
    539,360.78x = 807,779.72 × 426,282.08
  4. Step 4: Simplify right side
    539,360.78x = 344,342,016,250.22
  5. Step 5: Solve for x
    x = 344,342,016,250.22/539,360.78
  6. Step 6: Final answer
    x = 638,426.14

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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.