Home / 642,934.84-887,943.18-501,385.72

Finding the Fourth Proportional to 642,934.84, 887,943.18 and 501,385.72

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Solution

The fourth proportional to 642,934.84, 887,943.18 and 501,385.72 is: 692,452.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,934.84 : 887,943.18 = 501,385.72 : x
  2. Step 2: Convert to fraction form
    642,934.84/887,943.18 = 501,385.72/x
  3. Step 3: Cross multiply
    642,934.84x = 887,943.18 × 501,385.72
  4. Step 4: Simplify right side
    642,934.84x = 445,202,030,623.39
  5. Step 5: Solve for x
    x = 445,202,030,623.39/642,934.84
  6. Step 6: Final answer
    x = 692,452.80

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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.