Home / 1,120,159.40-1,680,044.70-409,821.80

Finding the Fourth Proportional to 1,120,159.40, 1,680,044.70 and 409,821.80

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Solution

The fourth proportional to 1,120,159.40, 1,680,044.70 and 409,821.80 is: 614,661.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,120,159.40 : 1,680,044.70 = 409,821.80 : x
  2. Step 2: Convert to fraction form
    1,120,159.40/1,680,044.70 = 409,821.80/x
  3. Step 3: Cross multiply
    1,120,159.40x = 1,680,044.70 × 409,821.80
  4. Step 4: Simplify right side
    1,120,159.40x = 688,518,943,034.46
  5. Step 5: Solve for x
    x = 688,518,943,034.46/1,120,159.40
  6. Step 6: Final answer
    x = 614,661.58

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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.