Home / 918,902.80-1,378,354.20-664,992.10

Finding the Fourth Proportional to 918,902.80, 1,378,354.20 and 664,992.10

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Solution

The fourth proportional to 918,902.80, 1,378,354.20 and 664,992.10 is: 997,488.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,902.80 : 1,378,354.20 = 664,992.10 : x
  2. Step 2: Convert to fraction form
    918,902.80/1,378,354.20 = 664,992.10/x
  3. Step 3: Cross multiply
    918,902.80x = 1,378,354.20 × 664,992.10
  4. Step 4: Simplify right side
    918,902.80x = 916,594,654,001.82
  5. Step 5: Solve for x
    x = 916,594,654,001.82/918,902.80
  6. Step 6: Final answer
    x = 997,488.15

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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.