Home / 811,443.60-1,217,165.40-338,468.40

Finding the Fourth Proportional to 811,443.60, 1,217,165.40 and 338,468.40

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Solution

The fourth proportional to 811,443.60, 1,217,165.40 and 338,468.40 is: 507,702.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,443.60 : 1,217,165.40 = 338,468.40 : x
  2. Step 2: Convert to fraction form
    811,443.60/1,217,165.40 = 338,468.40/x
  3. Step 3: Cross multiply
    811,443.60x = 1,217,165.40 × 338,468.40
  4. Step 4: Simplify right side
    811,443.60x = 411,972,025,473.36
  5. Step 5: Solve for x
    x = 411,972,025,473.36/811,443.60
  6. Step 6: Final answer
    x = 507,702.60

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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.