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Finding the Fourth Proportional to 440,799.32, 661,146.42 and 260,992.28

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Solution

The fourth proportional to 440,799.32, 661,146.42 and 260,992.28 is: 391,457.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,799.32 : 661,146.42 = 260,992.28 : x
  2. Step 2: Convert to fraction form
    440,799.32/661,146.42 = 260,992.28/x
  3. Step 3: Cross multiply
    440,799.32x = 661,146.42 × 260,992.28
  4. Step 4: Simplify right side
    440,799.32x = 172,554,111,569.64
  5. Step 5: Solve for x
    x = 172,554,111,569.64/440,799.32
  6. Step 6: Final answer
    x = 391,457.30

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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.