Home / 876,351.20-1,314,526.80-315,312.80

Finding the Fourth Proportional to 876,351.20, 1,314,526.80 and 315,312.80

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Solution

The fourth proportional to 876,351.20, 1,314,526.80 and 315,312.80 is: 472,969.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    876,351.20 : 1,314,526.80 = 315,312.80 : x
  2. Step 2: Convert to fraction form
    876,351.20/1,314,526.80 = 315,312.80/x
  3. Step 3: Cross multiply
    876,351.20x = 1,314,526.80 × 315,312.80
  4. Step 4: Simplify right side
    876,351.20x = 414,487,125,983.04
  5. Step 5: Solve for x
    x = 414,487,125,983.04/876,351.20
  6. Step 6: Final answer
    x = 472,969.20

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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.