Home / 908,647.70-1,253,938.77-521,432.29

Finding the Fourth Proportional to 908,647.70, 1,253,938.77 and 521,432.29

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Solution

The fourth proportional to 908,647.70, 1,253,938.77 and 521,432.29 is: 719,579.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    908,647.70 : 1,253,938.77 = 521,432.29 : x
  2. Step 2: Convert to fraction form
    908,647.70/1,253,938.77 = 521,432.29/x
  3. Step 3: Cross multiply
    908,647.70x = 1,253,938.77 × 521,432.29
  4. Step 4: Simplify right side
    908,647.70x = 653,844,164,793.48
  5. Step 5: Solve for x
    x = 653,844,164,793.48/908,647.70
  6. Step 6: Final answer
    x = 719,579.39

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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.