Home / 680,079.20-1,018,563.60-347,266.40

Finding the Fourth Proportional to 680,079.20, 1,018,563.60 and 347,266.40

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Solution

The fourth proportional to 680,079.20, 1,018,563.60 and 347,266.40 is: 520,105.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,079.20 : 1,018,563.60 = 347,266.40 : x
  2. Step 2: Convert to fraction form
    680,079.20/1,018,563.60 = 347,266.40/x
  3. Step 3: Cross multiply
    680,079.20x = 1,018,563.60 × 347,266.40
  4. Step 4: Simplify right side
    680,079.20x = 353,712,914,543.04
  5. Step 5: Solve for x
    x = 353,712,914,543.04/680,079.20
  6. Step 6: Final answer
    x = 520,105.47

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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.