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Finding the Fourth Proportional to 626,090.40, 938,444.40 and 345,808.80

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Solution

The fourth proportional to 626,090.40, 938,444.40 and 345,808.80 is: 518,331.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,090.40 : 938,444.40 = 345,808.80 : x
  2. Step 2: Convert to fraction form
    626,090.40/938,444.40 = 345,808.80/x
  3. Step 3: Cross multiply
    626,090.40x = 938,444.40 × 345,808.80
  4. Step 4: Simplify right side
    626,090.40x = 324,522,331,830.72
  5. Step 5: Solve for x
    x = 324,522,331,830.72/626,090.40
  6. Step 6: Final answer
    x = 518,331.43

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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.