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Finding the Fourth Proportional to 518,834.88, 715,939.68 and 382,943.04

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Solution

The fourth proportional to 518,834.88, 715,939.68 and 382,943.04 is: 528,422.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,834.88 : 715,939.68 = 382,943.04 : x
  2. Step 2: Convert to fraction form
    518,834.88/715,939.68 = 382,943.04/x
  3. Step 3: Cross multiply
    518,834.88x = 715,939.68 × 382,943.04
  4. Step 4: Simplify right side
    518,834.88x = 274,164,117,515.83
  5. Step 5: Solve for x
    x = 274,164,117,515.83/518,834.88
  6. Step 6: Final answer
    x = 528,422.68

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1.5x scale

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.