Home / 679,995.20-1,019,701.20-342,905.60

Finding the Fourth Proportional to 679,995.20, 1,019,701.20 and 342,905.60

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Solution

The fourth proportional to 679,995.20, 1,019,701.20 and 342,905.60 is: 514,211.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,995.20 : 1,019,701.20 = 342,905.60 : x
  2. Step 2: Convert to fraction form
    679,995.20/1,019,701.20 = 342,905.60/x
  3. Step 3: Cross multiply
    679,995.20x = 1,019,701.20 × 342,905.60
  4. Step 4: Simplify right side
    679,995.20x = 349,661,251,806.72
  5. Step 5: Solve for x
    x = 349,661,251,806.72/679,995.20
  6. Step 6: Final answer
    x = 514,211.35

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1.5x scale

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.