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Finding the Fourth Proportional to 674,249.40, 930,492.46 and 387,769.70

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Solution

The fourth proportional to 674,249.40, 930,492.46 and 387,769.70 is: 535,138.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    674,249.40 : 930,492.46 = 387,769.70 : x
  2. Step 2: Convert to fraction form
    674,249.40/930,492.46 = 387,769.70/x
  3. Step 3: Cross multiply
    674,249.40x = 930,492.46 × 387,769.70
  4. Step 4: Simplify right side
    674,249.40x = 360,816,782,066.46
  5. Step 5: Solve for x
    x = 360,816,782,066.46/674,249.40
  6. Step 6: Final answer
    x = 535,138.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.