Home / 838,501.20-1,257,751.80-780,764.40

Finding the Fourth Proportional to 838,501.20, 1,257,751.80 and 780,764.40

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Solution

The fourth proportional to 838,501.20, 1,257,751.80 and 780,764.40 is: 1,171,146.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    838,501.20 : 1,257,751.80 = 780,764.40 : x
  2. Step 2: Convert to fraction form
    838,501.20/1,257,751.80 = 780,764.40/x
  3. Step 3: Cross multiply
    838,501.20x = 1,257,751.80 × 780,764.40
  4. Step 4: Simplify right side
    838,501.20x = 982,007,829,475.92
  5. Step 5: Solve for x
    x = 982,007,829,475.92/838,501.20
  6. Step 6: Final answer
    x = 1,171,146.60

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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.