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Finding the Fourth Proportional to 943,138.80, 1,301,491.72 and 513,410

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Solution

The fourth proportional to 943,138.80, 1,301,491.72 and 513,410 is: 708,484.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    943,138.80 : 1,301,491.72 = 513,410 : x
  2. Step 2: Convert to fraction form
    943,138.80/1,301,491.72 = 513,410/x
  3. Step 3: Cross multiply
    943,138.80x = 1,301,491.72 × 513,410
  4. Step 4: Simplify right side
    943,138.80x = 668,198,863,965.20
  5. Step 5: Solve for x
    x = 668,198,863,965.20/943,138.80
  6. Step 6: Final answer
    x = 708,484.12

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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.