Home / 1,438,749.80-2,158,124.70-1,377,319.40

Finding the Fourth Proportional to 1,438,749.80, 2,158,124.70 and 1,377,319.40

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Solution

The fourth proportional to 1,438,749.80, 2,158,124.70 and 1,377,319.40 is: 2,065,979.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,438,749.80 : 2,158,124.70 = 1,377,319.40 : x
  2. Step 2: Convert to fraction form
    1,438,749.80/2,158,124.70 = 1,377,319.40/x
  3. Step 3: Cross multiply
    1,438,749.80x = 2,158,124.70 × 1,377,319.40
  4. Step 4: Simplify right side
    1,438,749.80x = 2,972,427,016,929.18
  5. Step 5: Solve for x
    x = 2,972,427,016,929.18/1,438,749.80
  6. Step 6: Final answer
    x = 2,065,979.10

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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.