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Finding the Fourth Proportional to 605,217.80, 907,826.70 and 290,289.80

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Solution

The fourth proportional to 605,217.80, 907,826.70 and 290,289.80 is: 435,434.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,217.80 : 907,826.70 = 290,289.80 : x
  2. Step 2: Convert to fraction form
    605,217.80/907,826.70 = 290,289.80/x
  3. Step 3: Cross multiply
    605,217.80x = 907,826.70 × 290,289.80
  4. Step 4: Simplify right side
    605,217.80x = 263,532,831,177.66
  5. Step 5: Solve for x
    x = 263,532,831,177.66/605,217.80
  6. Step 6: Final answer
    x = 435,434.70

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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.