Home / 1,122,335.80-1,683,503.70-280,886.20

Finding the Fourth Proportional to 1,122,335.80, 1,683,503.70 and 280,886.20

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Solution

The fourth proportional to 1,122,335.80, 1,683,503.70 and 280,886.20 is: 421,329.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,122,335.80 : 1,683,503.70 = 280,886.20 : x
  2. Step 2: Convert to fraction form
    1,122,335.80/1,683,503.70 = 280,886.20/x
  3. Step 3: Cross multiply
    1,122,335.80x = 1,683,503.70 × 280,886.20
  4. Step 4: Simplify right side
    1,122,335.80x = 472,872,956,978.94
  5. Step 5: Solve for x
    x = 472,872,956,978.94/1,122,335.80
  6. Step 6: Final answer
    x = 421,329.30

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Double scale
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Similar ratio
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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.