Home / 1,386,128.70-2,078,998.65-439,595.10

Finding the Fourth Proportional to 1,386,128.70, 2,078,998.65 and 439,595.10

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Solution

The fourth proportional to 1,386,128.70, 2,078,998.65 and 439,595.10 is: 659,331.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,386,128.70 : 2,078,998.65 = 439,595.10 : x
  2. Step 2: Convert to fraction form
    1,386,128.70/2,078,998.65 = 439,595.10/x
  3. Step 3: Cross multiply
    1,386,128.70x = 2,078,998.65 × 439,595.10
  4. Step 4: Simplify right side
    1,386,128.70x = 913,917,619,446.62
  5. Step 5: Solve for x
    x = 913,917,619,446.62/1,386,128.70
  6. Step 6: Final answer
    x = 659,331.00

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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.