Home / 669,390.60-1,004,085.90-520,091.40

Finding the Fourth Proportional to 669,390.60, 1,004,085.90 and 520,091.40

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Solution

The fourth proportional to 669,390.60, 1,004,085.90 and 520,091.40 is: 780,137.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    669,390.60 : 1,004,085.90 = 520,091.40 : x
  2. Step 2: Convert to fraction form
    669,390.60/1,004,085.90 = 520,091.40/x
  3. Step 3: Cross multiply
    669,390.60x = 1,004,085.90 × 520,091.40
  4. Step 4: Simplify right side
    669,390.60x = 522,216,441,451.26
  5. Step 5: Solve for x
    x = 522,216,441,451.26/669,390.60
  6. Step 6: Final answer
    x = 780,137.10

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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.