Home / 879,654.32-1,319,585.36-280,405.38

Finding the Fourth Proportional to 879,654.32, 1,319,585.36 and 280,405.38

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Solution

The fourth proportional to 879,654.32, 1,319,585.36 and 280,405.38 is: 420,641.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    879,654.32 : 1,319,585.36 = 280,405.38 : x
  2. Step 2: Convert to fraction form
    879,654.32/1,319,585.36 = 280,405.38/x
  3. Step 3: Cross multiply
    879,654.32x = 1,319,585.36 × 280,405.38
  4. Step 4: Simplify right side
    879,654.32x = 370,018,834,313.24
  5. Step 5: Solve for x
    x = 370,018,834,313.24/879,654.32
  6. Step 6: Final answer
    x = 420,641.18

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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.