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Finding the Fourth Proportional to 519,579.84, 716,943.30 and 315,524.64

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Solution

The fourth proportional to 519,579.84, 716,943.30 and 315,524.64 is: 435,377.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,579.84 : 716,943.30 = 315,524.64 : x
  2. Step 2: Convert to fraction form
    519,579.84/716,943.30 = 315,524.64/x
  3. Step 3: Cross multiply
    519,579.84x = 716,943.30 × 315,524.64
  4. Step 4: Simplify right side
    519,579.84x = 226,213,276,632.91
  5. Step 5: Solve for x
    x = 226,213,276,632.91/519,579.84
  6. Step 6: Final answer
    x = 435,377.32

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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.