Home / 1,209,079.80-1,817,556.30-856,535.40

Finding the Fourth Proportional to 1,209,079.80, 1,817,556.30 and 856,535.40

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Solution

The fourth proportional to 1,209,079.80, 1,817,556.30 and 856,535.40 is: 1,287,591.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,209,079.80 : 1,817,556.30 = 856,535.40 : x
  2. Step 2: Convert to fraction form
    1,209,079.80/1,817,556.30 = 856,535.40/x
  3. Step 3: Cross multiply
    1,209,079.80x = 1,817,556.30 × 856,535.40
  4. Step 4: Simplify right side
    1,209,079.80x = 1,556,801,312,443.02
  5. Step 5: Solve for x
    x = 1,556,801,312,443.02/1,209,079.80
  6. Step 6: Final answer
    x = 1,287,591.86

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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.