Home / 874,859.39-1,207,319.15-487,664

Finding the Fourth Proportional to 874,859.39, 1,207,319.15 and 487,664

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Solution

The fourth proportional to 874,859.39, 1,207,319.15 and 487,664 is: 672,983.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    874,859.39 : 1,207,319.15 = 487,664 : x
  2. Step 2: Convert to fraction form
    874,859.39/1,207,319.15 = 487,664/x
  3. Step 3: Cross multiply
    874,859.39x = 1,207,319.15 × 487,664
  4. Step 4: Simplify right side
    874,859.39x = 588,766,085,965.60
  5. Step 5: Solve for x
    x = 588,766,085,965.60/874,859.39
  6. Step 6: Final answer
    x = 672,983.67

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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.