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Finding the Fourth Proportional to 487,191.60, 729,912.60 and 417,207.60

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Solution

The fourth proportional to 487,191.60, 729,912.60 and 417,207.60 is: 625,062.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,191.60 : 729,912.60 = 417,207.60 : x
  2. Step 2: Convert to fraction form
    487,191.60/729,912.60 = 417,207.60/x
  3. Step 3: Cross multiply
    487,191.60x = 729,912.60 × 417,207.60
  4. Step 4: Simplify right side
    487,191.60x = 304,525,084,055.76
  5. Step 5: Solve for x
    x = 304,525,084,055.76/487,191.60
  6. Step 6: Final answer
    x = 625,062.26

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1.5x scale

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.