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Finding the Fourth Proportional to 652,137.70, 978,206.55 and 402,960.10

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Solution

The fourth proportional to 652,137.70, 978,206.55 and 402,960.10 is: 604,440.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    652,137.70 : 978,206.55 = 402,960.10 : x
  2. Step 2: Convert to fraction form
    652,137.70/978,206.55 = 402,960.10/x
  3. Step 3: Cross multiply
    652,137.70x = 978,206.55 × 402,960.10
  4. Step 4: Simplify right side
    652,137.70x = 394,178,209,208.66
  5. Step 5: Solve for x
    x = 394,178,209,208.66/652,137.70
  6. Step 6: Final answer
    x = 604,440.15

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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.