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Finding the Fourth Proportional to 697,655.72, 962,752.65 and 391,734.52

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Solution

The fourth proportional to 697,655.72, 962,752.65 and 391,734.52 is: 540,586.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    697,655.72 : 962,752.65 = 391,734.52 : x
  2. Step 2: Convert to fraction form
    697,655.72/962,752.65 = 391,734.52/x
  3. Step 3: Cross multiply
    697,655.72x = 962,752.65 × 391,734.52
  4. Step 4: Simplify right side
    697,655.72x = 377,143,447,226.48
  5. Step 5: Solve for x
    x = 377,143,447,226.48/697,655.72
  6. Step 6: Final answer
    x = 540,586.76

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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.