Home / 513,979.29-709,190.91-322,881.98

Finding the Fourth Proportional to 513,979.29, 709,190.91 and 322,881.98

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Solution

The fourth proportional to 513,979.29, 709,190.91 and 322,881.98 is: 445,513.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    513,979.29 : 709,190.91 = 322,881.98 : x
  2. Step 2: Convert to fraction form
    513,979.29/709,190.91 = 322,881.98/x
  3. Step 3: Cross multiply
    513,979.29x = 709,190.91 × 322,881.98
  4. Step 4: Simplify right side
    513,979.29x = 228,984,961,672.85
  5. Step 5: Solve for x
    x = 228,984,961,672.85/513,979.29
  6. Step 6: Final answer
    x = 445,513.98

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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.