Home / 1,440,390.64-1,987,947.30-859,638.43

Finding the Fourth Proportional to 1,440,390.64, 1,987,947.30 and 859,638.43

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Solution

The fourth proportional to 1,440,390.64, 1,987,947.30 and 859,638.43 is: 1,186,425.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,440,390.64 : 1,987,947.30 = 859,638.43 : x
  2. Step 2: Convert to fraction form
    1,440,390.64/1,987,947.30 = 859,638.43/x
  3. Step 3: Cross multiply
    1,440,390.64x = 1,987,947.30 × 859,638.43
  4. Step 4: Simplify right side
    1,440,390.64x = 1,708,915,895,894.74
  5. Step 5: Solve for x
    x = 1,708,915,895,894.74/1,440,390.64
  6. Step 6: Final answer
    x = 1,186,425.30

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.