Home / 763,964.20-1,146,176.70-409,148.20

Finding the Fourth Proportional to 763,964.20, 1,146,176.70 and 409,148.20

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Solution

The fourth proportional to 763,964.20, 1,146,176.70 and 409,148.20 is: 613,845.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    763,964.20 : 1,146,176.70 = 409,148.20 : x
  2. Step 2: Convert to fraction form
    763,964.20/1,146,176.70 = 409,148.20/x
  3. Step 3: Cross multiply
    763,964.20x = 1,146,176.70 × 409,148.20
  4. Step 4: Simplify right side
    763,964.20x = 468,956,133,686.94
  5. Step 5: Solve for x
    x = 468,956,133,686.94/763,964.20
  6. Step 6: Final answer
    x = 613,845.69

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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.