Home / 787,711.60-1,181,567.40-338,647.60

Finding the Fourth Proportional to 787,711.60, 1,181,567.40 and 338,647.60

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Solution

The fourth proportional to 787,711.60, 1,181,567.40 and 338,647.60 is: 507,971.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    787,711.60 : 1,181,567.40 = 338,647.60 : x
  2. Step 2: Convert to fraction form
    787,711.60/1,181,567.40 = 338,647.60/x
  3. Step 3: Cross multiply
    787,711.60x = 1,181,567.40 × 338,647.60
  4. Step 4: Simplify right side
    787,711.60x = 400,134,964,248.24
  5. Step 5: Solve for x
    x = 400,134,964,248.24/787,711.60
  6. Step 6: Final answer
    x = 507,971.40

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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.