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Finding the Fourth Proportional to 457,866.55, 631,127.63 and 360,913.20

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Solution

The fourth proportional to 457,866.55, 631,127.63 and 360,913.20 is: 497,486.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,866.55 : 631,127.63 = 360,913.20 : x
  2. Step 2: Convert to fraction form
    457,866.55/631,127.63 = 360,913.20/x
  3. Step 3: Cross multiply
    457,866.55x = 631,127.63 × 360,913.20
  4. Step 4: Simplify right side
    457,866.55x = 227,782,292,551.72
  5. Step 5: Solve for x
    x = 227,782,292,551.72/457,866.55
  6. Step 6: Final answer
    x = 497,486.21

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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.