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Finding the Fourth Proportional to 862,059.60, 1,189,315.08 and 522,403.92

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Solution

The fourth proportional to 862,059.60, 1,189,315.08 and 522,403.92 is: 720,719.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    862,059.60 : 1,189,315.08 = 522,403.92 : x
  2. Step 2: Convert to fraction form
    862,059.60/1,189,315.08 = 522,403.92/x
  3. Step 3: Cross multiply
    862,059.60x = 1,189,315.08 × 522,403.92
  4. Step 4: Simplify right side
    862,059.60x = 621,302,859,907.11
  5. Step 5: Solve for x
    x = 621,302,859,907.11/862,059.60
  6. Step 6: Final answer
    x = 720,719.15

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1.5x scale

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.