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Finding the Fourth Proportional to 520,700.16, 718,536 and 288,113.52

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Solution

The fourth proportional to 520,700.16, 718,536 and 288,113.52 is: 397,579.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,700.16 : 718,536 = 288,113.52 : x
  2. Step 2: Convert to fraction form
    520,700.16/718,536 = 288,113.52/x
  3. Step 3: Cross multiply
    520,700.16x = 718,536 × 288,113.52
  4. Step 4: Simplify right side
    520,700.16x = 207,019,936,206.72
  5. Step 5: Solve for x
    x = 207,019,936,206.72/520,700.16
  6. Step 6: Final answer
    x = 397,579.94

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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.