Home / 805,772.40-1,208,658.60-522,337.20

Finding the Fourth Proportional to 805,772.40, 1,208,658.60 and 522,337.20

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Solution

The fourth proportional to 805,772.40, 1,208,658.60 and 522,337.20 is: 783,505.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    805,772.40 : 1,208,658.60 = 522,337.20 : x
  2. Step 2: Convert to fraction form
    805,772.40/1,208,658.60 = 522,337.20/x
  3. Step 3: Cross multiply
    805,772.40x = 1,208,658.60 × 522,337.20
  4. Step 4: Simplify right side
    805,772.40x = 631,327,348,879.92
  5. Step 5: Solve for x
    x = 631,327,348,879.92/805,772.40
  6. Step 6: Final answer
    x = 783,505.80

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Double scale
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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.