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Finding the Fourth Proportional to 526,889.10, 788,000.85 and 442,908.30

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Solution

The fourth proportional to 526,889.10, 788,000.85 and 442,908.30 is: 662,401.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    526,889.10 : 788,000.85 = 442,908.30 : x
  2. Step 2: Convert to fraction form
    526,889.10/788,000.85 = 442,908.30/x
  3. Step 3: Cross multiply
    526,889.10x = 788,000.85 × 442,908.30
  4. Step 4: Simplify right side
    526,889.10x = 349,012,116,872.06
  5. Step 5: Solve for x
    x = 349,012,116,872.06/526,889.10
  6. Step 6: Final answer
    x = 662,401.47

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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.