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Finding the Fourth Proportional to 591,618.40, 887,984.40 and 311,336.80

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Solution

The fourth proportional to 591,618.40, 887,984.40 and 311,336.80 is: 467,298.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    591,618.40 : 887,984.40 = 311,336.80 : x
  2. Step 2: Convert to fraction form
    591,618.40/887,984.40 = 311,336.80/x
  3. Step 3: Cross multiply
    591,618.40x = 887,984.40 × 311,336.80
  4. Step 4: Simplify right side
    591,618.40x = 276,462,221,545.92
  5. Step 5: Solve for x
    x = 276,462,221,545.92/591,618.40
  6. Step 6: Final answer
    x = 467,298.21

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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.