Home / 8,320,411.40-12,459,621.90-6,640,795.40

Finding the Fourth Proportional to 8,320,411.40, 12,459,621.90 and 6,640,795.40

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Solution

The fourth proportional to 8,320,411.40, 12,459,621.90 and 6,640,795.40 is: 9,944,436.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,320,411.40 : 12,459,621.90 = 6,640,795.40 : x
  2. Step 2: Convert to fraction form
    8,320,411.40/12,459,621.90 = 6,640,795.40/x
  3. Step 3: Cross multiply
    8,320,411.40x = 12,459,621.90 × 6,640,795.40
  4. Step 4: Simplify right side
    8,320,411.40x = 82,741,799,799,259.27
  5. Step 5: Solve for x
    x = 82,741,799,799,259.27/8,320,411.40
  6. Step 6: Final answer
    x = 9,944,436.14

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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.