Home / 1,279,572.37-1,920,834.75-649,814.78

Finding the Fourth Proportional to 1,279,572.37, 1,920,834.75 and 649,814.78

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Solution

The fourth proportional to 1,279,572.37, 1,920,834.75 and 649,814.78 is: 975,471.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,279,572.37 : 1,920,834.75 = 649,814.78 : x
  2. Step 2: Convert to fraction form
    1,279,572.37/1,920,834.75 = 649,814.78/x
  3. Step 3: Cross multiply
    1,279,572.37x = 1,920,834.75 × 649,814.78
  4. Step 4: Simplify right side
    1,279,572.37x = 1,248,186,810,487.61
  5. Step 5: Solve for x
    x = 1,248,186,810,487.61/1,279,572.37
  6. Step 6: Final answer
    x = 975,471.84

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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.