Home / 939,076.80-1,406,455.20-771,115.20

Finding the Fourth Proportional to 939,076.80, 1,406,455.20 and 771,115.20

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Solution

The fourth proportional to 939,076.80, 1,406,455.20 and 771,115.20 is: 1,154,899.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    939,076.80 : 1,406,455.20 = 771,115.20 : x
  2. Step 2: Convert to fraction form
    939,076.80/1,406,455.20 = 771,115.20/x
  3. Step 3: Cross multiply
    939,076.80x = 1,406,455.20 × 771,115.20
  4. Step 4: Simplify right side
    939,076.80x = 1,084,538,982,839.04
  5. Step 5: Solve for x
    x = 1,084,538,982,839.04/939,076.80
  6. Step 6: Final answer
    x = 1,154,899.13

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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.