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Finding the Fourth Proportional to 605,260.80, 907,891.20 and 290,332.80

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Solution

The fourth proportional to 605,260.80, 907,891.20 and 290,332.80 is: 435,499.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,260.80 : 907,891.20 = 290,332.80 : x
  2. Step 2: Convert to fraction form
    605,260.80/907,891.20 = 290,332.80/x
  3. Step 3: Cross multiply
    605,260.80x = 907,891.20 × 290,332.80
  4. Step 4: Simplify right side
    605,260.80x = 263,590,594,191.36
  5. Step 5: Solve for x
    x = 263,590,594,191.36/605,260.80
  6. Step 6: Final answer
    x = 435,499.20

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Similar ratio
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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.