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Finding the Fourth Proportional to 673,785.84, 929,718.54 and 387,250.60

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Solution

The fourth proportional to 673,785.84, 929,718.54 and 387,250.60 is: 534,344.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    673,785.84 : 929,718.54 = 387,250.60 : x
  2. Step 2: Convert to fraction form
    673,785.84/929,718.54 = 387,250.60/x
  3. Step 3: Cross multiply
    673,785.84x = 929,718.54 × 387,250.60
  4. Step 4: Simplify right side
    673,785.84x = 360,034,062,446.12
  5. Step 5: Solve for x
    x = 360,034,062,446.12/673,785.84
  6. Step 6: Final answer
    x = 534,344.95

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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.