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Finding the Fourth Proportional to 944,359, 1,303,215.42 and 520,423

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Solution

The fourth proportional to 944,359, 1,303,215.42 and 520,423 is: 718,183.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    944,359 : 1,303,215.42 = 520,423 : x
  2. Step 2: Convert to fraction form
    944,359/1,303,215.42 = 520,423/x
  3. Step 3: Cross multiply
    944,359x = 1,303,215.42 × 520,423
  4. Step 4: Simplify right side
    944,359x = 678,223,278,522.66
  5. Step 5: Solve for x
    x = 678,223,278,522.66/944,359
  6. Step 6: Final answer
    x = 718,183.74

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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.