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Finding the Fourth Proportional to 642,989.83, 887,146.32 and 506,600.41

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Solution

The fourth proportional to 642,989.83, 887,146.32 and 506,600.41 is: 698,967.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,989.83 : 887,146.32 = 506,600.41 : x
  2. Step 2: Convert to fraction form
    642,989.83/887,146.32 = 506,600.41/x
  3. Step 3: Cross multiply
    642,989.83x = 887,146.32 × 506,600.41
  4. Step 4: Simplify right side
    642,989.83x = 449,428,689,441.99
  5. Step 5: Solve for x
    x = 449,428,689,441.99/642,989.83
  6. Step 6: Final answer
    x = 698,967.03

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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.