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Finding the Fourth Proportional to 575,136.40, 862,704.60 and 291,701.20

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Solution

The fourth proportional to 575,136.40, 862,704.60 and 291,701.20 is: 437,551.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    575,136.40 : 862,704.60 = 291,701.20 : x
  2. Step 2: Convert to fraction form
    575,136.40/862,704.60 = 291,701.20/x
  3. Step 3: Cross multiply
    575,136.40x = 862,704.60 × 291,701.20
  4. Step 4: Simplify right side
    575,136.40x = 251,651,967,065.52
  5. Step 5: Solve for x
    x = 251,651,967,065.52/575,136.40
  6. Step 6: Final answer
    x = 437,551.80

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Similar ratio
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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.