Home / 642,417.12-886,505.76-352,026.96

Finding the Fourth Proportional to 642,417.12, 886,505.76 and 352,026.96

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Solution

The fourth proportional to 642,417.12, 886,505.76 and 352,026.96 is: 485,780.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,417.12 : 886,505.76 = 352,026.96 : x
  2. Step 2: Convert to fraction form
    642,417.12/886,505.76 = 352,026.96/x
  3. Step 3: Cross multiply
    642,417.12x = 886,505.76 × 352,026.96
  4. Step 4: Simplify right side
    642,417.12x = 312,073,927,715.29
  5. Step 5: Solve for x
    x = 312,073,927,715.29/642,417.12
  6. Step 6: Final answer
    x = 485,780.84

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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.