Home / 731,780.12-1,009,898.89-409,487.40

Finding the Fourth Proportional to 731,780.12, 1,009,898.89 and 409,487.40

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Solution

The fourth proportional to 731,780.12, 1,009,898.89 and 409,487.40 is: 565,116.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    731,780.12 : 1,009,898.89 = 409,487.40 : x
  2. Step 2: Convert to fraction form
    731,780.12/1,009,898.89 = 409,487.40/x
  3. Step 3: Cross multiply
    731,780.12x = 1,009,898.89 × 409,487.40
  4. Step 4: Simplify right side
    731,780.12x = 413,540,869,705.27
  5. Step 5: Solve for x
    x = 413,540,869,705.27/731,780.12
  6. Step 6: Final answer
    x = 565,116.29

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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.