Home / 637,901.20-956,851.80-319,036.60

Finding the Fourth Proportional to 637,901.20, 956,851.80 and 319,036.60

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Solution

The fourth proportional to 637,901.20, 956,851.80 and 319,036.60 is: 478,554.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    637,901.20 : 956,851.80 = 319,036.60 : x
  2. Step 2: Convert to fraction form
    637,901.20/956,851.80 = 319,036.60/x
  3. Step 3: Cross multiply
    637,901.20x = 956,851.80 × 319,036.60
  4. Step 4: Simplify right side
    637,901.20x = 305,270,744,975.88
  5. Step 5: Solve for x
    x = 305,270,744,975.88/637,901.20
  6. Step 6: Final answer
    x = 478,554.90

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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.