Home / 787,711.10-1,181,566.65-338,647.10

Finding the Fourth Proportional to 787,711.10, 1,181,566.65 and 338,647.10

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Solution

The fourth proportional to 787,711.10, 1,181,566.65 and 338,647.10 is: 507,970.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    787,711.10 : 1,181,566.65 = 338,647.10 : x
  2. Step 2: Convert to fraction form
    787,711.10/1,181,566.65 = 338,647.10/x
  3. Step 3: Cross multiply
    787,711.10x = 1,181,566.65 × 338,647.10
  4. Step 4: Simplify right side
    787,711.10x = 400,134,119,479.22
  5. Step 5: Solve for x
    x = 400,134,119,479.22/787,711.10
  6. Step 6: Final answer
    x = 507,970.65

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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.