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Finding the Fourth Proportional to 674,274.87, 930,532.55 and 383,892.20

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Solution

The fourth proportional to 674,274.87, 930,532.55 and 383,892.20 is: 529,790.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    674,274.87 : 930,532.55 = 383,892.20 : x
  2. Step 2: Convert to fraction form
    674,274.87/930,532.55 = 383,892.20/x
  3. Step 3: Cross multiply
    674,274.87x = 930,532.55 × 383,892.20
  4. Step 4: Simplify right side
    674,274.87x = 357,224,181,218.99
  5. Step 5: Solve for x
    x = 357,224,181,218.99/674,274.87
  6. Step 6: Final answer
    x = 529,790.15

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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.