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Finding the Fourth Proportional to 487,789.60, 730,809.60 and 417,805.60

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Solution

The fourth proportional to 487,789.60, 730,809.60 and 417,805.60 is: 625,959.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,789.60 : 730,809.60 = 417,805.60 : x
  2. Step 2: Convert to fraction form
    487,789.60/730,809.60 = 417,805.60/x
  3. Step 3: Cross multiply
    487,789.60x = 730,809.60 × 417,805.60
  4. Step 4: Simplify right side
    487,789.60x = 305,336,343,413.76
  5. Step 5: Solve for x
    x = 305,336,343,413.76/487,789.60
  6. Step 6: Final answer
    x = 625,959.11

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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.