Home / 731,905.59-1,010,135.80-421,747.84

Finding the Fourth Proportional to 731,905.59, 1,010,135.80 and 421,747.84

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Solution

The fourth proportional to 731,905.59, 1,010,135.80 and 421,747.84 is: 582,073.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    731,905.59 : 1,010,135.80 = 421,747.84 : x
  2. Step 2: Convert to fraction form
    731,905.59/1,010,135.80 = 421,747.84/x
  3. Step 3: Cross multiply
    731,905.59x = 1,010,135.80 × 421,747.84
  4. Step 4: Simplify right side
    731,905.59x = 426,022,585,492.18
  5. Step 5: Solve for x
    x = 426,022,585,492.18/731,905.59
  6. Step 6: Final answer
    x = 582,073.14

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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.