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Finding the Fourth Proportional to 520,887, 718,828.38 and 282,423

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Solution

The fourth proportional to 520,887, 718,828.38 and 282,423 is: 389,746.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,887 : 718,828.38 = 282,423 : x
  2. Step 2: Convert to fraction form
    520,887/718,828.38 = 282,423/x
  3. Step 3: Cross multiply
    520,887x = 718,828.38 × 282,423
  4. Step 4: Simplify right side
    520,887x = 203,013,667,564.74
  5. Step 5: Solve for x
    x = 203,013,667,564.74/520,887
  6. Step 6: Final answer
    x = 389,746.08

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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.