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Finding the Fourth Proportional to 615,624.20, 922,658.70 and 299,400.20

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Solution

The fourth proportional to 615,624.20, 922,658.70 and 299,400.20 is: 448,722.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,624.20 : 922,658.70 = 299,400.20 : x
  2. Step 2: Convert to fraction form
    615,624.20/922,658.70 = 299,400.20/x
  3. Step 3: Cross multiply
    615,624.20x = 922,658.70 × 299,400.20
  4. Step 4: Simplify right side
    615,624.20x = 276,244,199,311.74
  5. Step 5: Solve for x
    x = 276,244,199,311.74/615,624.20
  6. Step 6: Final answer
    x = 448,722.13

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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.