Home / 578,011.20-867,018.08-311,897.12

Finding the Fourth Proportional to 578,011.20, 867,018.08 and 311,897.12

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Solution

The fourth proportional to 578,011.20, 867,018.08 and 311,897.12 is: 467,846.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,011.20 : 867,018.08 = 311,897.12 : x
  2. Step 2: Convert to fraction form
    578,011.20/867,018.08 = 311,897.12/x
  3. Step 3: Cross multiply
    578,011.20x = 867,018.08 × 311,897.12
  4. Step 4: Simplify right side
    578,011.20x = 270,420,442,139.93
  5. Step 5: Solve for x
    x = 270,420,442,139.93/578,011.20
  6. Step 6: Final answer
    x = 467,846.37

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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.