Home / 1,315,272.30-1,972,908.45-318,000.30

Finding the Fourth Proportional to 1,315,272.30, 1,972,908.45 and 318,000.30

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Solution

The fourth proportional to 1,315,272.30, 1,972,908.45 and 318,000.30 is: 477,000.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,315,272.30 : 1,972,908.45 = 318,000.30 : x
  2. Step 2: Convert to fraction form
    1,315,272.30/1,972,908.45 = 318,000.30/x
  3. Step 3: Cross multiply
    1,315,272.30x = 1,972,908.45 × 318,000.30
  4. Step 4: Simplify right side
    1,315,272.30x = 627,385,478,972.54
  5. Step 5: Solve for x
    x = 627,385,478,972.54/1,315,272.30
  6. Step 6: Final answer
    x = 477,000.45

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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.