Home / 803,170.15-1,108,806.50-620,355.78

Finding the Fourth Proportional to 803,170.15, 1,108,806.50 and 620,355.78

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Solution

The fourth proportional to 803,170.15, 1,108,806.50 and 620,355.78 is: 856,424.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    803,170.15 : 1,108,806.50 = 620,355.78 : x
  2. Step 2: Convert to fraction form
    803,170.15/1,108,806.50 = 620,355.78/x
  3. Step 3: Cross multiply
    803,170.15x = 1,108,806.50 × 620,355.78
  4. Step 4: Simplify right side
    803,170.15x = 687,854,522,727.46
  5. Step 5: Solve for x
    x = 687,854,522,727.46/803,170.15
  6. Step 6: Final answer
    x = 856,424.41

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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.