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Finding the Fourth Proportional to 971,955.90, 1,456,751.84 and 687,728.36

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Solution

The fourth proportional to 971,955.90, 1,456,751.84 and 687,728.36 is: 1,030,756.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    971,955.90 : 1,456,751.84 = 687,728.36 : x
  2. Step 2: Convert to fraction form
    971,955.90/1,456,751.84 = 687,728.36/x
  3. Step 3: Cross multiply
    971,955.90x = 1,456,751.84 × 687,728.36
  4. Step 4: Simplify right side
    971,955.90x = 1,001,849,553,850.18
  5. Step 5: Solve for x
    x = 1,001,849,553,850.18/971,955.90
  6. Step 6: Final answer
    x = 1,030,756.18

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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.