Home / 879,560.40-1,319,340.60-280,565.40

Finding the Fourth Proportional to 879,560.40, 1,319,340.60 and 280,565.40

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Solution

The fourth proportional to 879,560.40, 1,319,340.60 and 280,565.40 is: 420,848.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    879,560.40 : 1,319,340.60 = 280,565.40 : x
  2. Step 2: Convert to fraction form
    879,560.40/1,319,340.60 = 280,565.40/x
  3. Step 3: Cross multiply
    879,560.40x = 1,319,340.60 × 280,565.40
  4. Step 4: Simplify right side
    879,560.40x = 370,161,323,175.24
  5. Step 5: Solve for x
    x = 370,161,323,175.24/879,560.40
  6. Step 6: Final answer
    x = 420,848.10

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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.