Home / 515,125.80-772,688.70-458,045.10

Finding the Fourth Proportional to 515,125.80, 772,688.70 and 458,045.10

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Solution

The fourth proportional to 515,125.80, 772,688.70 and 458,045.10 is: 687,067.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,125.80 : 772,688.70 = 458,045.10 : x
  2. Step 2: Convert to fraction form
    515,125.80/772,688.70 = 458,045.10/x
  3. Step 3: Cross multiply
    515,125.80x = 772,688.70 × 458,045.10
  4. Step 4: Simplify right side
    515,125.80x = 353,926,272,860.37
  5. Step 5: Solve for x
    x = 353,926,272,860.37/515,125.80
  6. Step 6: Final answer
    x = 687,067.65

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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.