Home / 8,085,690.20-12,128,535.30-7,424,341.40

Finding the Fourth Proportional to 8,085,690.20, 12,128,535.30 and 7,424,341.40

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Solution

The fourth proportional to 8,085,690.20, 12,128,535.30 and 7,424,341.40 is: 11,136,512.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,085,690.20 : 12,128,535.30 = 7,424,341.40 : x
  2. Step 2: Convert to fraction form
    8,085,690.20/12,128,535.30 = 7,424,341.40/x
  3. Step 3: Cross multiply
    8,085,690.20x = 12,128,535.30 × 7,424,341.40
  4. Step 4: Simplify right side
    8,085,690.20x = 90,046,386,749,151.44
  5. Step 5: Solve for x
    x = 90,046,386,749,151.44/8,085,690.20
  6. Step 6: Final answer
    x = 11,136,512.10

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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.