Home / 911,520.81-1,257,911.91-503,632.04

Finding the Fourth Proportional to 911,520.81, 1,257,911.91 and 503,632.04

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Solution

The fourth proportional to 911,520.81, 1,257,911.91 and 503,632.04 is: 695,019.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    911,520.81 : 1,257,911.91 = 503,632.04 : x
  2. Step 2: Convert to fraction form
    911,520.81/1,257,911.91 = 503,632.04/x
  3. Step 3: Cross multiply
    911,520.81x = 1,257,911.91 × 503,632.04
  4. Step 4: Simplify right side
    911,520.81x = 633,524,735,084.04
  5. Step 5: Solve for x
    x = 633,524,735,084.04/911,520.81
  6. Step 6: Final answer
    x = 695,019.50

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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.