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Finding the Fourth Proportional to 617,865.80, 925,632.30 and 317,323.40

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Solution

The fourth proportional to 617,865.80, 925,632.30 and 317,323.40 is: 475,386.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,865.80 : 925,632.30 = 317,323.40 : x
  2. Step 2: Convert to fraction form
    617,865.80/925,632.30 = 317,323.40/x
  3. Step 3: Cross multiply
    617,865.80x = 925,632.30 × 317,323.40
  4. Step 4: Simplify right side
    617,865.80x = 293,724,788,585.82
  5. Step 5: Solve for x
    x = 293,724,788,585.82/617,865.80
  6. Step 6: Final answer
    x = 475,386.06

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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.