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Finding the Fourth Proportional to 1,254,967.68, 1,731,921.84 and 711,209.28

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Solution

The fourth proportional to 1,254,967.68, 1,731,921.84 and 711,209.28 is: 981,506.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,254,967.68 : 1,731,921.84 = 711,209.28 : x
  2. Step 2: Convert to fraction form
    1,254,967.68/1,731,921.84 = 711,209.28/x
  3. Step 3: Cross multiply
    1,254,967.68x = 1,731,921.84 × 711,209.28
  4. Step 4: Simplify right side
    1,254,967.68x = 1,231,758,884,842.68
  5. Step 5: Solve for x
    x = 1,231,758,884,842.68/1,254,967.68
  6. Step 6: Final answer
    x = 981,506.46

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.