Home / 1,103,615.40-1,522,875.78-620,103.72

Finding the Fourth Proportional to 1,103,615.40, 1,522,875.78 and 620,103.72

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Solution

The fourth proportional to 1,103,615.40, 1,522,875.78 and 620,103.72 is: 855,679.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,103,615.40 : 1,522,875.78 = 620,103.72 : x
  2. Step 2: Convert to fraction form
    1,103,615.40/1,522,875.78 = 620,103.72/x
  3. Step 3: Cross multiply
    1,103,615.40x = 1,522,875.78 × 620,103.72
  4. Step 4: Simplify right side
    1,103,615.40x = 944,340,936,275.90
  5. Step 5: Solve for x
    x = 944,340,936,275.90/1,103,615.40
  6. Step 6: Final answer
    x = 855,679.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.