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Finding the Fourth Proportional to 658,031.44, 987,047 and 358,763.72

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Solution

The fourth proportional to 658,031.44, 987,047 and 358,763.72 is: 538,145.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,031.44 : 987,047 = 358,763.72 : x
  2. Step 2: Convert to fraction form
    658,031.44/987,047 = 358,763.72/x
  3. Step 3: Cross multiply
    658,031.44x = 987,047 × 358,763.72
  4. Step 4: Simplify right side
    658,031.44x = 354,116,653,534.84
  5. Step 5: Solve for x
    x = 354,116,653,534.84/658,031.44
  6. Step 6: Final answer
    x = 538,145.49

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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.