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Finding the Fourth Proportional to 653,569.20, 978,798.60 and 653,569.20

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Solution

The fourth proportional to 653,569.20, 978,798.60 and 653,569.20 is: 978,798.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    653,569.20 : 978,798.60 = 653,569.20 : x
  2. Step 2: Convert to fraction form
    653,569.20/978,798.60 = 653,569.20/x
  3. Step 3: Cross multiply
    653,569.20x = 978,798.60 × 653,569.20
  4. Step 4: Simplify right side
    653,569.20x = 639,712,617,963.12
  5. Step 5: Solve for x
    x = 639,712,617,963.12/653,569.20
  6. Step 6: Final answer
    x = 978,798.60

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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.