Home / 791,280.10-1,091,965.08-428,713.21

Finding the Fourth Proportional to 791,280.10, 1,091,965.08 and 428,713.21

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Solution

The fourth proportional to 791,280.10, 1,091,965.08 and 428,713.21 is: 591,623.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    791,280.10 : 1,091,965.08 = 428,713.21 : x
  2. Step 2: Convert to fraction form
    791,280.10/1,091,965.08 = 428,713.21/x
  3. Step 3: Cross multiply
    791,280.10x = 1,091,965.08 × 428,713.21
  4. Step 4: Simplify right side
    791,280.10x = 468,139,854,654.71
  5. Step 5: Solve for x
    x = 468,139,854,654.71/791,280.10
  6. Step 6: Final answer
    x = 591,623.44

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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.