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Finding the Fourth Proportional to 713,671.91, 1,070,509.72 and 240,689.51

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Solution

The fourth proportional to 713,671.91, 1,070,509.72 and 240,689.51 is: 361,034.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,671.91 : 1,070,509.72 = 240,689.51 : x
  2. Step 2: Convert to fraction form
    713,671.91/1,070,509.72 = 240,689.51/x
  3. Step 3: Cross multiply
    713,671.91x = 1,070,509.72 × 240,689.51
  4. Step 4: Simplify right side
    713,671.91x = 257,660,459,957.04
  5. Step 5: Solve for x
    x = 257,660,459,957.04/713,671.91
  6. Step 6: Final answer
    x = 361,034.89

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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.