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Finding the Fourth Proportional to 674,254.71, 930,499.82 and 387,775.06

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Solution

The fourth proportional to 674,254.71, 930,499.82 and 387,775.06 is: 535,145.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    674,254.71 : 930,499.82 = 387,775.06 : x
  2. Step 2: Convert to fraction form
    674,254.71/930,499.82 = 387,775.06/x
  3. Step 3: Cross multiply
    674,254.71x = 930,499.82 × 387,775.06
  4. Step 4: Simplify right side
    674,254.71x = 360,824,620,719.52
  5. Step 5: Solve for x
    x = 360,824,620,719.52/674,254.71
  6. Step 6: Final answer
    x = 535,145.87

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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.