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Finding the Fourth Proportional to 626,091.40, 938,445.90 and 345,809.80

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Solution

The fourth proportional to 626,091.40, 938,445.90 and 345,809.80 is: 518,332.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,091.40 : 938,445.90 = 345,809.80 : x
  2. Step 2: Convert to fraction form
    626,091.40/938,445.90 = 345,809.80/x
  3. Step 3: Cross multiply
    626,091.40x = 938,445.90 × 345,809.80
  4. Step 4: Simplify right side
    626,091.40x = 324,523,788,989.82
  5. Step 5: Solve for x
    x = 324,523,788,989.82/626,091.40
  6. Step 6: Final answer
    x = 518,332.93

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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.