Home / 690,066.41-1,035,040.14-420,124.64

Finding the Fourth Proportional to 690,066.41, 1,035,040.14 and 420,124.64

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Solution

The fourth proportional to 690,066.41, 1,035,040.14 and 420,124.64 is: 630,150.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,066.41 : 1,035,040.14 = 420,124.64 : x
  2. Step 2: Convert to fraction form
    690,066.41/1,035,040.14 = 420,124.64/x
  3. Step 3: Cross multiply
    690,066.41x = 1,035,040.14 × 420,124.64
  4. Step 4: Simplify right side
    690,066.41x = 434,845,868,790.65
  5. Step 5: Solve for x
    x = 434,845,868,790.65/690,066.41
  6. Step 6: Final answer
    x = 630,150.75

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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.