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Finding the Fourth Proportional to 539,602.78, 744,657.86 and 297,885.47

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Solution

The fourth proportional to 539,602.78, 744,657.86 and 297,885.47 is: 411,085.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,602.78 : 744,657.86 = 297,885.47 : x
  2. Step 2: Convert to fraction form
    539,602.78/744,657.86 = 297,885.47/x
  3. Step 3: Cross multiply
    539,602.78x = 744,657.86 × 297,885.47
  4. Step 4: Simplify right side
    539,602.78x = 221,822,756,615.29
  5. Step 5: Solve for x
    x = 221,822,756,615.29/539,602.78
  6. Step 6: Final answer
    x = 411,085.27

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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.