Home / 910,419.40-1,365,629.10-820,217.80

Finding the Fourth Proportional to 910,419.40, 1,365,629.10 and 820,217.80

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Solution

The fourth proportional to 910,419.40, 1,365,629.10 and 820,217.80 is: 1,230,326.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    910,419.40 : 1,365,629.10 = 820,217.80 : x
  2. Step 2: Convert to fraction form
    910,419.40/1,365,629.10 = 820,217.80/x
  3. Step 3: Cross multiply
    910,419.40x = 1,365,629.10 × 820,217.80
  4. Step 4: Simplify right side
    910,419.40x = 1,120,113,296,017.98
  5. Step 5: Solve for x
    x = 1,120,113,296,017.98/910,419.40
  6. Step 6: Final answer
    x = 1,230,326.70

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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.