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Finding the Fourth Proportional to 674,707, 930,493 and 559,803.73

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Solution

The fourth proportional to 674,707, 930,493 and 559,803.73 is: 772,029.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    674,707 : 930,493 = 559,803.73 : x
  2. Step 2: Convert to fraction form
    674,707/930,493 = 559,803.73/x
  3. Step 3: Cross multiply
    674,707x = 930,493 × 559,803.73
  4. Step 4: Simplify right side
    674,707x = 520,893,452,138.89
  5. Step 5: Solve for x
    x = 520,893,452,138.89/674,707
  6. Step 6: Final answer
    x = 772,029.12

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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.