Home / 879,864.40-1,319,796.60-280,869.40

Finding the Fourth Proportional to 879,864.40, 1,319,796.60 and 280,869.40

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Solution

The fourth proportional to 879,864.40, 1,319,796.60 and 280,869.40 is: 421,304.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    879,864.40 : 1,319,796.60 = 280,869.40 : x
  2. Step 2: Convert to fraction form
    879,864.40/1,319,796.60 = 280,869.40/x
  3. Step 3: Cross multiply
    879,864.40x = 1,319,796.60 × 280,869.40
  4. Step 4: Simplify right side
    879,864.40x = 370,690,479,164.04
  5. Step 5: Solve for x
    x = 370,690,479,164.04/879,864.40
  6. Step 6: Final answer
    x = 421,304.10

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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.