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Finding the Fourth Proportional to 1,866,287.60, 2,794,947.34 and 1,065,140.28

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Solution

The fourth proportional to 1,866,287.60, 2,794,947.34 and 1,065,140.28 is: 1,595,151.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,866,287.60 : 2,794,947.34 = 1,065,140.28 : x
  2. Step 2: Convert to fraction form
    1,866,287.60/2,794,947.34 = 1,065,140.28/x
  3. Step 3: Cross multiply
    1,866,287.60x = 2,794,947.34 × 1,065,140.28
  4. Step 4: Simplify right side
    1,866,287.60x = 2,977,010,992,312.86
  5. Step 5: Solve for x
    x = 2,977,010,992,312.86/1,866,287.60
  6. Step 6: Final answer
    x = 1,595,151.25

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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.