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Finding the Fourth Proportional to 631,272.30, 946,908.45 and 519,079.20

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Solution

The fourth proportional to 631,272.30, 946,908.45 and 519,079.20 is: 778,618.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,272.30 : 946,908.45 = 519,079.20 : x
  2. Step 2: Convert to fraction form
    631,272.30/946,908.45 = 519,079.20/x
  3. Step 3: Cross multiply
    631,272.30x = 946,908.45 × 519,079.20
  4. Step 4: Simplify right side
    631,272.30x = 491,520,480,699.24
  5. Step 5: Solve for x
    x = 491,520,480,699.24/631,272.30
  6. Step 6: Final answer
    x = 778,618.80

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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.