Home / 971,285.80-1,456,928.70-261,385.60

Finding the Fourth Proportional to 971,285.80, 1,456,928.70 and 261,385.60

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Solution

The fourth proportional to 971,285.80, 1,456,928.70 and 261,385.60 is: 392,078.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    971,285.80 : 1,456,928.70 = 261,385.60 : x
  2. Step 2: Convert to fraction form
    971,285.80/1,456,928.70 = 261,385.60/x
  3. Step 3: Cross multiply
    971,285.80x = 1,456,928.70 × 261,385.60
  4. Step 4: Simplify right side
    971,285.80x = 380,820,182,406.72
  5. Step 5: Solve for x
    x = 380,820,182,406.72/971,285.80
  6. Step 6: Final answer
    x = 392,078.40

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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.