Home / 1,209,140.56-1,668,579.55-665,276.71

Finding the Fourth Proportional to 1,209,140.56, 1,668,579.55 and 665,276.71

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Solution

The fourth proportional to 1,209,140.56, 1,668,579.55 and 665,276.71 is: 918,062.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,209,140.56 : 1,668,579.55 = 665,276.71 : x
  2. Step 2: Convert to fraction form
    1,209,140.56/1,668,579.55 = 665,276.71/x
  3. Step 3: Cross multiply
    1,209,140.56x = 1,668,579.55 × 665,276.71
  4. Step 4: Simplify right side
    1,209,140.56x = 1,110,067,113,397.28
  5. Step 5: Solve for x
    x = 1,110,067,113,397.28/1,209,140.56
  6. Step 6: Final answer
    x = 918,062.92

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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.