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Finding the Fourth Proportional to 617,690.21, 852,154.53 and 402,822.92

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Solution

The fourth proportional to 617,690.21, 852,154.53 and 402,822.92 is: 555,727.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,690.21 : 852,154.53 = 402,822.92 : x
  2. Step 2: Convert to fraction form
    617,690.21/852,154.53 = 402,822.92/x
  3. Step 3: Cross multiply
    617,690.21x = 852,154.53 × 402,822.92
  4. Step 4: Simplify right side
    617,690.21x = 343,267,376,685.63
  5. Step 5: Solve for x
    x = 343,267,376,685.63/617,690.21
  6. Step 6: Final answer
    x = 555,727.41

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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.