Home / 879,215.85-1,318,809.47-280,168.92

Finding the Fourth Proportional to 879,215.85, 1,318,809.47 and 280,168.92

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Solution

The fourth proportional to 879,215.85, 1,318,809.47 and 280,168.92 is: 420,248.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    879,215.85 : 1,318,809.47 = 280,168.92 : x
  2. Step 2: Convert to fraction form
    879,215.85/1,318,809.47 = 280,168.92/x
  3. Step 3: Cross multiply
    879,215.85x = 1,318,809.47 × 280,168.92
  4. Step 4: Simplify right side
    879,215.85x = 369,489,423,494.83
  5. Step 5: Solve for x
    x = 369,489,423,494.83/879,215.85
  6. Step 6: Final answer
    x = 420,248.82

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1.5x scale

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.