Home / 3,119,306.40-4,678,959.60-1,917,331.20

Finding the Fourth Proportional to 3,119,306.40, 4,678,959.60 and 1,917,331.20

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Solution

The fourth proportional to 3,119,306.40, 4,678,959.60 and 1,917,331.20 is: 2,875,996.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,119,306.40 : 4,678,959.60 = 1,917,331.20 : x
  2. Step 2: Convert to fraction form
    3,119,306.40/4,678,959.60 = 1,917,331.20/x
  3. Step 3: Cross multiply
    3,119,306.40x = 4,678,959.60 × 1,917,331.20
  4. Step 4: Simplify right side
    3,119,306.40x = 8,971,115,224,619.52
  5. Step 5: Solve for x
    x = 8,971,115,224,619.52/3,119,306.40
  6. Step 6: Final answer
    x = 2,875,996.80

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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.