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Finding the Fourth Proportional to 626,098.40, 938,456.40 and 345,816.80

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Solution

The fourth proportional to 626,098.40, 938,456.40 and 345,816.80 is: 518,343.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,098.40 : 938,456.40 = 345,816.80 : x
  2. Step 2: Convert to fraction form
    626,098.40/938,456.40 = 345,816.80/x
  3. Step 3: Cross multiply
    626,098.40x = 938,456.40 × 345,816.80
  4. Step 4: Simplify right side
    626,098.40x = 324,533,989,187.52
  5. Step 5: Solve for x
    x = 324,533,989,187.52/626,098.40
  6. Step 6: Final answer
    x = 518,343.43

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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.