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Finding the Fourth Proportional to 720,417.76, 1,080,626.62 and 271,239.40

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Solution

The fourth proportional to 720,417.76, 1,080,626.62 and 271,239.40 is: 406,859.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    720,417.76 : 1,080,626.62 = 271,239.40 : x
  2. Step 2: Convert to fraction form
    720,417.76/1,080,626.62 = 271,239.40/x
  3. Step 3: Cross multiply
    720,417.76x = 1,080,626.62 × 271,239.40
  4. Step 4: Simplify right side
    720,417.76x = 293,108,516,032.83
  5. Step 5: Solve for x
    x = 293,108,516,032.83/720,417.76
  6. Step 6: Final answer
    x = 406,859.09

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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.