Home / 8,085,502.80-12,128,254.20-7,766,638.20

Finding the Fourth Proportional to 8,085,502.80, 12,128,254.20 and 7,766,638.20

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Solution

The fourth proportional to 8,085,502.80, 12,128,254.20 and 7,766,638.20 is: 11,649,957.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,085,502.80 : 12,128,254.20 = 7,766,638.20 : x
  2. Step 2: Convert to fraction form
    8,085,502.80/12,128,254.20 = 7,766,638.20/x
  3. Step 3: Cross multiply
    8,085,502.80x = 12,128,254.20 × 7,766,638.20
  4. Step 4: Simplify right side
    8,085,502.80x = 94,195,762,369,030.44
  5. Step 5: Solve for x
    x = 94,195,762,369,030.44/8,085,502.80
  6. Step 6: Final answer
    x = 11,649,957.30

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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.