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Finding the Fourth Proportional to 556,396.28, 833,985.57 and 286,540.76

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Solution

The fourth proportional to 556,396.28, 833,985.57 and 286,540.76 is: 429,497.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,396.28 : 833,985.57 = 286,540.76 : x
  2. Step 2: Convert to fraction form
    556,396.28/833,985.57 = 286,540.76/x
  3. Step 3: Cross multiply
    556,396.28x = 833,985.57 × 286,540.76
  4. Step 4: Simplify right side
    556,396.28x = 238,970,859,056.83
  5. Step 5: Solve for x
    x = 238,970,859,056.83/556,396.28
  6. Step 6: Final answer
    x = 429,497.59

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.