Home / 819,445.80-1,229,168.70-778,895.40

Finding the Fourth Proportional to 819,445.80, 1,229,168.70 and 778,895.40

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Solution

The fourth proportional to 819,445.80, 1,229,168.70 and 778,895.40 is: 1,168,343.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,445.80 : 1,229,168.70 = 778,895.40 : x
  2. Step 2: Convert to fraction form
    819,445.80/1,229,168.70 = 778,895.40/x
  3. Step 3: Cross multiply
    819,445.80x = 1,229,168.70 × 778,895.40
  4. Step 4: Simplify right side
    819,445.80x = 957,393,846,253.98
  5. Step 5: Solve for x
    x = 957,393,846,253.98/819,445.80
  6. Step 6: Final answer
    x = 1,168,343.10

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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.