Home / 868,128.22-1,302,259.65-260,869.12

Finding the Fourth Proportional to 868,128.22, 1,302,259.65 and 260,869.12

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Solution

The fourth proportional to 868,128.22, 1,302,259.65 and 260,869.12 is: 391,323.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    868,128.22 : 1,302,259.65 = 260,869.12 : x
  2. Step 2: Convert to fraction form
    868,128.22/1,302,259.65 = 260,869.12/x
  3. Step 3: Cross multiply
    868,128.22x = 1,302,259.65 × 260,869.12
  4. Step 4: Simplify right side
    868,128.22x = 339,719,328,907.01
  5. Step 5: Solve for x
    x = 339,719,328,907.01/868,128.22
  6. Step 6: Final answer
    x = 391,323.91

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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.