Home / 709,531.20-1,062,914.40-428,212.80

Finding the Fourth Proportional to 709,531.20, 1,062,914.40 and 428,212.80

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Solution

The fourth proportional to 709,531.20, 1,062,914.40 and 428,212.80 is: 641,484.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,531.20 : 1,062,914.40 = 428,212.80 : x
  2. Step 2: Convert to fraction form
    709,531.20/1,062,914.40 = 428,212.80/x
  3. Step 3: Cross multiply
    709,531.20x = 1,062,914.40 × 428,212.80
  4. Step 4: Simplify right side
    709,531.20x = 455,153,551,384.32
  5. Step 5: Solve for x
    x = 455,153,551,384.32/709,531.20
  6. Step 6: Final answer
    x = 641,484.90

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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.