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Finding the Fourth Proportional to 708,781.52, 978,292.68 and 547,390.64

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Solution

The fourth proportional to 708,781.52, 978,292.68 and 547,390.64 is: 755,533.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    708,781.52 : 978,292.68 = 547,390.64 : x
  2. Step 2: Convert to fraction form
    708,781.52/978,292.68 = 547,390.64/x
  3. Step 3: Cross multiply
    708,781.52x = 978,292.68 × 547,390.64
  4. Step 4: Simplify right side
    708,781.52x = 535,508,256,212.52
  5. Step 5: Solve for x
    x = 535,508,256,212.52/708,781.52
  6. Step 6: Final answer
    x = 755,533.60

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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.