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Finding the Fourth Proportional to 909,937.60, 1,364,906.40 and 278,769.40

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Solution

The fourth proportional to 909,937.60, 1,364,906.40 and 278,769.40 is: 418,154.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    909,937.60 : 1,364,906.40 = 278,769.40 : x
  2. Step 2: Convert to fraction form
    909,937.60/1,364,906.40 = 278,769.40/x
  3. Step 3: Cross multiply
    909,937.60x = 1,364,906.40 × 278,769.40
  4. Step 4: Simplify right side
    909,937.60x = 380,494,138,184.16
  5. Step 5: Solve for x
    x = 380,494,138,184.16/909,937.60
  6. Step 6: Final answer
    x = 418,154.10

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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.