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Finding the Fourth Proportional to 1,265,836.68, 1,746,509.04 and 721,774.08

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Solution

The fourth proportional to 1,265,836.68, 1,746,509.04 and 721,774.08 is: 995,851.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,265,836.68 : 1,746,509.04 = 721,774.08 : x
  2. Step 2: Convert to fraction form
    1,265,836.68/1,746,509.04 = 721,774.08/x
  3. Step 3: Cross multiply
    1,265,836.68x = 1,746,509.04 × 721,774.08
  4. Step 4: Simplify right side
    1,265,836.68x = 1,260,584,955,557.68
  5. Step 5: Solve for x
    x = 1,260,584,955,557.68/1,265,836.68
  6. Step 6: Final answer
    x = 995,851.18

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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.