Home / 1,189,557.10-1,641,590.08-645,692.80

Finding the Fourth Proportional to 1,189,557.10, 1,641,590.08 and 645,692.80

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Solution

The fourth proportional to 1,189,557.10, 1,641,590.08 and 645,692.80 is: 891,056.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,557.10 : 1,641,590.08 = 645,692.80 : x
  2. Step 2: Convert to fraction form
    1,189,557.10/1,641,590.08 = 645,692.80/x
  3. Step 3: Cross multiply
    1,189,557.10x = 1,641,590.08 × 645,692.80
  4. Step 4: Simplify right side
    1,189,557.10x = 1,059,962,895,207.42
  5. Step 5: Solve for x
    x = 1,059,962,895,207.42/1,189,557.10
  6. Step 6: Final answer
    x = 891,056.76

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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.