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Finding the Fourth Proportional to 408,332.15, 611,300.54 and 286,329.70

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Solution

The fourth proportional to 408,332.15, 611,300.54 and 286,329.70 is: 428,654.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,332.15 : 611,300.54 = 286,329.70 : x
  2. Step 2: Convert to fraction form
    408,332.15/611,300.54 = 286,329.70/x
  3. Step 3: Cross multiply
    408,332.15x = 611,300.54 × 286,329.70
  4. Step 4: Simplify right side
    408,332.15x = 175,033,496,658.82
  5. Step 5: Solve for x
    x = 175,033,496,658.82/408,332.15
  6. Step 6: Final answer
    x = 428,654.70

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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.