Home / 1,316,658.20-1,974,988.10-319,386.20

Finding the Fourth Proportional to 1,316,658.20, 1,974,988.10 and 319,386.20

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Solution

The fourth proportional to 1,316,658.20, 1,974,988.10 and 319,386.20 is: 479,079.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,316,658.20 : 1,974,988.10 = 319,386.20 : x
  2. Step 2: Convert to fraction form
    1,316,658.20/1,974,988.10 = 319,386.20/x
  3. Step 3: Cross multiply
    1,316,658.20x = 1,974,988.10 × 319,386.20
  4. Step 4: Simplify right side
    1,316,658.20x = 630,783,932,832.35
  5. Step 5: Solve for x
    x = 630,783,932,832.35/1,316,658.20
  6. Step 6: Final answer
    x = 479,079.49

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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.