Home / 788,491.40-1,182,737.10-315,516.20

Finding the Fourth Proportional to 788,491.40, 1,182,737.10 and 315,516.20

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Solution

The fourth proportional to 788,491.40, 1,182,737.10 and 315,516.20 is: 473,274.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    788,491.40 : 1,182,737.10 = 315,516.20 : x
  2. Step 2: Convert to fraction form
    788,491.40/1,182,737.10 = 315,516.20/x
  3. Step 3: Cross multiply
    788,491.40x = 1,182,737.10 × 315,516.20
  4. Step 4: Simplify right side
    788,491.40x = 373,172,715,391.02
  5. Step 5: Solve for x
    x = 373,172,715,391.02/788,491.40
  6. Step 6: Final answer
    x = 473,274.30

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Half scale
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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.