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Finding the Fourth Proportional to 652,605.70, 978,616.95 and 253,113.70

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Solution

The fourth proportional to 652,605.70, 978,616.95 and 253,113.70 is: 379,557.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    652,605.70 : 978,616.95 = 253,113.70 : x
  2. Step 2: Convert to fraction form
    652,605.70/978,616.95 = 253,113.70/x
  3. Step 3: Cross multiply
    652,605.70x = 978,616.95 × 253,113.70
  4. Step 4: Simplify right side
    652,605.70x = 247,701,357,097.22
  5. Step 5: Solve for x
    x = 247,701,357,097.22/652,605.70
  6. Step 6: Final answer
    x = 379,557.45

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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.