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Finding the Fourth Proportional to 545,614.11, 752,985.32 and 330,763.23

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Solution

The fourth proportional to 545,614.11, 752,985.32 and 330,763.23 is: 456,476.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,614.11 : 752,985.32 = 330,763.23 : x
  2. Step 2: Convert to fraction form
    545,614.11/752,985.32 = 330,763.23/x
  3. Step 3: Cross multiply
    545,614.11x = 752,985.32 × 330,763.23
  4. Step 4: Simplify right side
    545,614.11x = 249,059,854,931.97
  5. Step 5: Solve for x
    x = 249,059,854,931.97/545,614.11
  6. Step 6: Final answer
    x = 456,476.20

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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.