Home / 879,098.40-1,318,590.90-280,490.58

Finding the Fourth Proportional to 879,098.40, 1,318,590.90 and 280,490.58

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Solution

The fourth proportional to 879,098.40, 1,318,590.90 and 280,490.58 is: 420,717.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    879,098.40 : 1,318,590.90 = 280,490.58 : x
  2. Step 2: Convert to fraction form
    879,098.40/1,318,590.90 = 280,490.58/x
  3. Step 3: Cross multiply
    879,098.40x = 1,318,590.90 × 280,490.58
  4. Step 4: Simplify right side
    879,098.40x = 369,852,326,323.72
  5. Step 5: Solve for x
    x = 369,852,326,323.72/879,098.40
  6. Step 6: Final answer
    x = 420,717.78

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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.