Home / 918,135.60-1,377,203.40-681,939.60

Finding the Fourth Proportional to 918,135.60, 1,377,203.40 and 681,939.60

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Solution

The fourth proportional to 918,135.60, 1,377,203.40 and 681,939.60 is: 1,022,909.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,135.60 : 1,377,203.40 = 681,939.60 : x
  2. Step 2: Convert to fraction form
    918,135.60/1,377,203.40 = 681,939.60/x
  3. Step 3: Cross multiply
    918,135.60x = 1,377,203.40 × 681,939.60
  4. Step 4: Simplify right side
    918,135.60x = 939,169,535,714.64
  5. Step 5: Solve for x
    x = 939,169,535,714.64/918,135.60
  6. Step 6: Final answer
    x = 1,022,909.40

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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.