Home / 879,218.91-1,318,539.20-310,496.85

Finding the Fourth Proportional to 879,218.91, 1,318,539.20 and 310,496.85

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Solution

The fourth proportional to 879,218.91, 1,318,539.20 and 310,496.85 is: 465,643.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    879,218.91 : 1,318,539.20 = 310,496.85 : x
  2. Step 2: Convert to fraction form
    879,218.91/1,318,539.20 = 310,496.85/x
  3. Step 3: Cross multiply
    879,218.91x = 1,318,539.20 × 310,496.85
  4. Step 4: Simplify right side
    879,218.91x = 409,402,266,649.04
  5. Step 5: Solve for x
    x = 409,402,266,649.04/879,218.91
  6. Step 6: Final answer
    x = 465,643.15

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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.