Home / 510,822.60-766,233.90-431,106.45

Finding the Fourth Proportional to 510,822.60, 766,233.90 and 431,106.45

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Solution

The fourth proportional to 510,822.60, 766,233.90 and 431,106.45 is: 646,659.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    510,822.60 : 766,233.90 = 431,106.45 : x
  2. Step 2: Convert to fraction form
    510,822.60/766,233.90 = 431,106.45/x
  3. Step 3: Cross multiply
    510,822.60x = 766,233.90 × 431,106.45
  4. Step 4: Simplify right side
    510,822.60x = 330,328,376,498.66
  5. Step 5: Solve for x
    x = 330,328,376,498.66/510,822.60
  6. Step 6: Final answer
    x = 646,659.68

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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.