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Finding the Fourth Proportional to 971,955.78, 1,456,751.67 and 687,728.22

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Solution

The fourth proportional to 971,955.78, 1,456,751.67 and 687,728.22 is: 1,030,755.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    971,955.78 : 1,456,751.67 = 687,728.22 : x
  2. Step 2: Convert to fraction form
    971,955.78/1,456,751.67 = 687,728.22/x
  3. Step 3: Cross multiply
    971,955.78x = 1,456,751.67 × 687,728.22
  4. Step 4: Simplify right side
    971,955.78x = 1,001,849,232,991.13
  5. Step 5: Solve for x
    x = 1,001,849,232,991.13/971,955.78
  6. Step 6: Final answer
    x = 1,030,755.98

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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.