Home / 731,378.90-1,008,896.69-425,420.84

Finding the Fourth Proportional to 731,378.90, 1,008,896.69 and 425,420.84

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Solution

The fourth proportional to 731,378.90, 1,008,896.69 and 425,420.84 is: 586,844.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    731,378.90 : 1,008,896.69 = 425,420.84 : x
  2. Step 2: Convert to fraction form
    731,378.90/1,008,896.69 = 425,420.84/x
  3. Step 3: Cross multiply
    731,378.90x = 1,008,896.69 × 425,420.84
  4. Step 4: Simplify right side
    731,378.90x = 429,205,677,333.02
  5. Step 5: Solve for x
    x = 429,205,677,333.02/731,378.90
  6. Step 6: Final answer
    x = 586,844.49

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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.