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Finding the Fourth Proportional to 659,056.80, 987,418.80 and 617,066.40

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Solution

The fourth proportional to 659,056.80, 987,418.80 and 617,066.40 is: 924,507.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,056.80 : 987,418.80 = 617,066.40 : x
  2. Step 2: Convert to fraction form
    659,056.80/987,418.80 = 617,066.40/x
  3. Step 3: Cross multiply
    659,056.80x = 987,418.80 × 617,066.40
  4. Step 4: Simplify right side
    659,056.80x = 609,302,964,208.32
  5. Step 5: Solve for x
    x = 609,302,964,208.32/659,056.80
  6. Step 6: Final answer
    x = 924,507.51

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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.