Home / 689,338,210.53-951,282,157.92-391,980,474.21

Finding the Fourth Proportional to 689,338,210.53, 951,282,157.92 and 391,980,474.21

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Solution

The fourth proportional to 689,338,210.53, 951,282,157.92 and 391,980,474.21 is: 540,930,454.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,338,210.53 : 951,282,157.92 = 391,980,474.21 : x
  2. Step 2: Convert to fraction form
    689,338,210.53/951,282,157.92 = 391,980,474.21/x
  3. Step 3: Cross multiply
    689,338,210.53x = 951,282,157.92 × 391,980,474.21
  4. Step 4: Simplify right side
    689,338,210.53x = 372,884,031,373,253,696
  5. Step 5: Solve for x
    x = 372,884,031,373,253,696/689,338,210.53
  6. Step 6: Final answer
    x = 540,930,454.28

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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.