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Finding the Fourth Proportional to 432,040.40, 648,060.60 and 342,810.80

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Solution

The fourth proportional to 432,040.40, 648,060.60 and 342,810.80 is: 514,216.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    432,040.40 : 648,060.60 = 342,810.80 : x
  2. Step 2: Convert to fraction form
    432,040.40/648,060.60 = 342,810.80/x
  3. Step 3: Cross multiply
    432,040.40x = 648,060.60 × 342,810.80
  4. Step 4: Simplify right side
    432,040.40x = 222,162,172,734.48
  5. Step 5: Solve for x
    x = 222,162,172,734.48/432,040.40
  6. Step 6: Final answer
    x = 514,216.20

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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.