Home / 1,386,643.70-2,079,965.55-488,078.30

Finding the Fourth Proportional to 1,386,643.70, 2,079,965.55 and 488,078.30

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Solution

The fourth proportional to 1,386,643.70, 2,079,965.55 and 488,078.30 is: 732,117.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,386,643.70 : 2,079,965.55 = 488,078.30 : x
  2. Step 2: Convert to fraction form
    1,386,643.70/2,079,965.55 = 488,078.30/x
  3. Step 3: Cross multiply
    1,386,643.70x = 2,079,965.55 × 488,078.30
  4. Step 4: Simplify right side
    1,386,643.70x = 1,015,186,049,702.57
  5. Step 5: Solve for x
    x = 1,015,186,049,702.57/1,386,643.70
  6. Step 6: Final answer
    x = 732,117.45

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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.