Home / 642,835.31-886,933.18-506,445.91

Finding the Fourth Proportional to 642,835.31, 886,933.18 and 506,445.91

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Solution

The fourth proportional to 642,835.31, 886,933.18 and 506,445.91 is: 698,753.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,835.31 : 886,933.18 = 506,445.91 : x
  2. Step 2: Convert to fraction form
    642,835.31/886,933.18 = 506,445.91/x
  3. Step 3: Cross multiply
    642,835.31x = 886,933.18 × 506,445.91
  4. Step 4: Simplify right side
    642,835.31x = 449,183,677,910.58
  5. Step 5: Solve for x
    x = 449,183,677,910.58/642,835.31
  6. Step 6: Final answer
    x = 698,753.89

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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.