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Finding the Fourth Proportional to 621,659.75, 928,950.66 and 466,776

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Solution

The fourth proportional to 621,659.75, 928,950.66 and 466,776 is: 697,506.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,659.75 : 928,950.66 = 466,776 : x
  2. Step 2: Convert to fraction form
    621,659.75/928,950.66 = 466,776/x
  3. Step 3: Cross multiply
    621,659.75x = 928,950.66 × 466,776
  4. Step 4: Simplify right side
    621,659.75x = 433,611,873,272.16
  5. Step 5: Solve for x
    x = 433,611,873,272.16/621,659.75
  6. Step 6: Final answer
    x = 697,506.76

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.