Home / 753,136.80-1,129,348.80-437,690.40

Finding the Fourth Proportional to 753,136.80, 1,129,348.80 and 437,690.40

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Solution

The fourth proportional to 753,136.80, 1,129,348.80 and 437,690.40 is: 656,328.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    753,136.80 : 1,129,348.80 = 437,690.40 : x
  2. Step 2: Convert to fraction form
    753,136.80/1,129,348.80 = 437,690.40/x
  3. Step 3: Cross multiply
    753,136.80x = 1,129,348.80 × 437,690.40
  4. Step 4: Simplify right side
    753,136.80x = 494,305,128,011.52
  5. Step 5: Solve for x
    x = 494,305,128,011.52/753,136.80
  6. Step 6: Final answer
    x = 656,328.48

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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.