Home / 918,139.60-1,377,209.40-818,412.40

Finding the Fourth Proportional to 918,139.60, 1,377,209.40 and 818,412.40

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Solution

The fourth proportional to 918,139.60, 1,377,209.40 and 818,412.40 is: 1,227,618.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,139.60 : 1,377,209.40 = 818,412.40 : x
  2. Step 2: Convert to fraction form
    918,139.60/1,377,209.40 = 818,412.40/x
  3. Step 3: Cross multiply
    918,139.60x = 1,377,209.40 × 818,412.40
  4. Step 4: Simplify right side
    918,139.60x = 1,127,125,250,356.56
  5. Step 5: Solve for x
    x = 1,127,125,250,356.56/918,139.60
  6. Step 6: Final answer
    x = 1,227,618.60

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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.