Home / 691,882.70-1,038,261.45-407,572.70

Finding the Fourth Proportional to 691,882.70, 1,038,261.45 and 407,572.70

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Solution

The fourth proportional to 691,882.70, 1,038,261.45 and 407,572.70 is: 611,616.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,882.70 : 1,038,261.45 = 407,572.70 : x
  2. Step 2: Convert to fraction form
    691,882.70/1,038,261.45 = 407,572.70/x
  3. Step 3: Cross multiply
    691,882.70x = 1,038,261.45 × 407,572.70
  4. Step 4: Simplify right side
    691,882.70x = 423,167,022,482.42
  5. Step 5: Solve for x
    x = 423,167,022,482.42/691,882.70
  6. Step 6: Final answer
    x = 611,616.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.