Home / 923,731.80-1,385,403.30-391,270.20

Finding the Fourth Proportional to 923,731.80, 1,385,403.30 and 391,270.20

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Solution

The fourth proportional to 923,731.80, 1,385,403.30 and 391,270.20 is: 586,822.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    923,731.80 : 1,385,403.30 = 391,270.20 : x
  2. Step 2: Convert to fraction form
    923,731.80/1,385,403.30 = 391,270.20/x
  3. Step 3: Cross multiply
    923,731.80x = 1,385,403.30 × 391,270.20
  4. Step 4: Simplify right side
    923,731.80x = 542,067,026,271.66
  5. Step 5: Solve for x
    x = 542,067,026,271.66/923,731.80
  6. Step 6: Final answer
    x = 586,822.96

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1.5x scale

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.