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Finding the Fourth Proportional to 652,593.30, 978,889.95 and 643,735.95

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Solution

The fourth proportional to 652,593.30, 978,889.95 and 643,735.95 is: 965,603.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    652,593.30 : 978,889.95 = 643,735.95 : x
  2. Step 2: Convert to fraction form
    652,593.30/978,889.95 = 643,735.95/x
  3. Step 3: Cross multiply
    652,593.30x = 978,889.95 × 643,735.95
  4. Step 4: Simplify right side
    652,593.30x = 630,146,651,908.70
  5. Step 5: Solve for x
    x = 630,146,651,908.70/652,593.30
  6. Step 6: Final answer
    x = 965,603.93

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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.