Home / 876,143.20-1,312,659.60-543,330.40

Finding the Fourth Proportional to 876,143.20, 1,312,659.60 and 543,330.40

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Solution

The fourth proportional to 876,143.20, 1,312,659.60 and 543,330.40 is: 814,031.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    876,143.20 : 1,312,659.60 = 543,330.40 : x
  2. Step 2: Convert to fraction form
    876,143.20/1,312,659.60 = 543,330.40/x
  3. Step 3: Cross multiply
    876,143.20x = 1,312,659.60 × 543,330.40
  4. Step 4: Simplify right side
    876,143.20x = 713,207,865,531.84
  5. Step 5: Solve for x
    x = 713,207,865,531.84/876,143.20
  6. Step 6: Final answer
    x = 814,031.16

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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.