Home / 918,006.10-1,377,009.15-386,127.70

Finding the Fourth Proportional to 918,006.10, 1,377,009.15 and 386,127.70

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Solution

The fourth proportional to 918,006.10, 1,377,009.15 and 386,127.70 is: 579,191.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,006.10 : 1,377,009.15 = 386,127.70 : x
  2. Step 2: Convert to fraction form
    918,006.10/1,377,009.15 = 386,127.70/x
  3. Step 3: Cross multiply
    918,006.10x = 1,377,009.15 × 386,127.70
  4. Step 4: Simplify right side
    918,006.10x = 531,701,375,968.46
  5. Step 5: Solve for x
    x = 531,701,375,968.46/918,006.10
  6. Step 6: Final answer
    x = 579,191.55

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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.