Home / 649,929.23-896,600.11-420,560.65

Finding the Fourth Proportional to 649,929.23, 896,600.11 and 420,560.65

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Solution

The fourth proportional to 649,929.23, 896,600.11 and 420,560.65 is: 580,178.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    649,929.23 : 896,600.11 = 420,560.65 : x
  2. Step 2: Convert to fraction form
    649,929.23/896,600.11 = 420,560.65/x
  3. Step 3: Cross multiply
    649,929.23x = 896,600.11 × 420,560.65
  4. Step 4: Simplify right side
    649,929.23x = 377,074,725,051.67
  5. Step 5: Solve for x
    x = 377,074,725,051.67/649,929.23
  6. Step 6: Final answer
    x = 580,178.13

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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.