Home / 642,836.31-886,934.56-506,446.91

Finding the Fourth Proportional to 642,836.31, 886,934.56 and 506,446.91

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Solution

The fourth proportional to 642,836.31, 886,934.56 and 506,446.91 is: 698,755.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,836.31 : 886,934.56 = 506,446.91 : x
  2. Step 2: Convert to fraction form
    642,836.31/886,934.56 = 506,446.91/x
  3. Step 3: Cross multiply
    642,836.31x = 886,934.56 × 506,446.91
  4. Step 4: Simplify right side
    642,836.31x = 449,185,267,284.21
  5. Step 5: Solve for x
    x = 449,185,267,284.21/642,836.31
  6. Step 6: Final answer
    x = 698,755.28

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1.5x scale

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.