Home / 781,696.99-1,172,246.59-426,521.17

Finding the Fourth Proportional to 781,696.99, 1,172,246.59 and 426,521.17

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Solution

The fourth proportional to 781,696.99, 1,172,246.59 and 426,521.17 is: 639,618.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,696.99 : 1,172,246.59 = 426,521.17 : x
  2. Step 2: Convert to fraction form
    781,696.99/1,172,246.59 = 426,521.17/x
  3. Step 3: Cross multiply
    781,696.99x = 1,172,246.59 × 426,521.17
  4. Step 4: Simplify right side
    781,696.99x = 499,987,987,095.31
  5. Step 5: Solve for x
    x = 499,987,987,095.31/781,696.99
  6. Step 6: Final answer
    x = 639,618.67

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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.