Home / 763,505.10-1,144,278.45-426,545.10

Finding the Fourth Proportional to 763,505.10, 1,144,278.45 and 426,545.10

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Solution

The fourth proportional to 763,505.10, 1,144,278.45 and 426,545.10 is: 639,270.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    763,505.10 : 1,144,278.45 = 426,545.10 : x
  2. Step 2: Convert to fraction form
    763,505.10/1,144,278.45 = 426,545.10/x
  3. Step 3: Cross multiply
    763,505.10x = 1,144,278.45 × 426,545.10
  4. Step 4: Simplify right side
    763,505.10x = 488,086,365,883.10
  5. Step 5: Solve for x
    x = 488,086,365,883.10/763,505.10
  6. Step 6: Final answer
    x = 639,270.60

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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.