Home / 729,217.45-1,006,320.27-402,530.65

Finding the Fourth Proportional to 729,217.45, 1,006,320.27 and 402,530.65

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Solution

The fourth proportional to 729,217.45, 1,006,320.27 and 402,530.65 is: 555,492.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    729,217.45 : 1,006,320.27 = 402,530.65 : x
  2. Step 2: Convert to fraction form
    729,217.45/1,006,320.27 = 402,530.65/x
  3. Step 3: Cross multiply
    729,217.45x = 1,006,320.27 × 402,530.65
  4. Step 4: Simplify right side
    729,217.45x = 405,074,747,359.67
  5. Step 5: Solve for x
    x = 405,074,747,359.67/729,217.45
  6. Step 6: Final answer
    x = 555,492.40

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.