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Finding the Fourth Proportional to 522,654.40, 721,316.64 and 307,862.08

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Solution

The fourth proportional to 522,654.40, 721,316.64 and 307,862.08 is: 424,881.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,654.40 : 721,316.64 = 307,862.08 : x
  2. Step 2: Convert to fraction form
    522,654.40/721,316.64 = 307,862.08/x
  3. Step 3: Cross multiply
    522,654.40x = 721,316.64 × 307,862.08
  4. Step 4: Simplify right side
    522,654.40x = 222,066,041,129.01
  5. Step 5: Solve for x
    x = 222,066,041,129.01/522,654.40
  6. Step 6: Final answer
    x = 424,881.22

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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.