Home / 918,239.80-1,377,359.70-664,329.10

Finding the Fourth Proportional to 918,239.80, 1,377,359.70 and 664,329.10

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Solution

The fourth proportional to 918,239.80, 1,377,359.70 and 664,329.10 is: 996,493.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,239.80 : 1,377,359.70 = 664,329.10 : x
  2. Step 2: Convert to fraction form
    918,239.80/1,377,359.70 = 664,329.10/x
  3. Step 3: Cross multiply
    918,239.80x = 1,377,359.70 × 664,329.10
  4. Step 4: Simplify right side
    918,239.80x = 915,020,129,877.27
  5. Step 5: Solve for x
    x = 915,020,129,877.27/918,239.80
  6. Step 6: Final answer
    x = 996,493.65

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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.