Home / 689,415.31-951,082.19-402,806.53

Finding the Fourth Proportional to 689,415.31, 951,082.19 and 402,806.53

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Solution

The fourth proportional to 689,415.31, 951,082.19 and 402,806.53 is: 555,691.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,415.31 : 951,082.19 = 402,806.53 : x
  2. Step 2: Convert to fraction form
    689,415.31/951,082.19 = 402,806.53/x
  3. Step 3: Cross multiply
    689,415.31x = 951,082.19 × 402,806.53
  4. Step 4: Simplify right side
    689,415.31x = 383,102,114,684.67
  5. Step 5: Solve for x
    x = 383,102,114,684.67/689,415.31
  6. Step 6: Final answer
    x = 555,691.34

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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.