Home / 1,438,862.40-2,159,071.20-640,267.20

Finding the Fourth Proportional to 1,438,862.40, 2,159,071.20 and 640,267.20

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Solution

The fourth proportional to 1,438,862.40, 2,159,071.20 and 640,267.20 is: 960,746.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,438,862.40 : 2,159,071.20 = 640,267.20 : x
  2. Step 2: Convert to fraction form
    1,438,862.40/2,159,071.20 = 640,267.20/x
  3. Step 3: Cross multiply
    1,438,862.40x = 2,159,071.20 × 640,267.20
  4. Step 4: Simplify right side
    1,438,862.40x = 1,382,382,471,824.64
  5. Step 5: Solve for x
    x = 1,382,382,471,824.64/1,438,862.40
  6. Step 6: Final answer
    x = 960,746.82

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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.