Home / 643,802.15-888,556.91-371,821.16

Finding the Fourth Proportional to 643,802.15, 888,556.91 and 371,821.16

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Solution

The fourth proportional to 643,802.15, 888,556.91 and 371,821.16 is: 513,176.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,802.15 : 888,556.91 = 371,821.16 : x
  2. Step 2: Convert to fraction form
    643,802.15/888,556.91 = 371,821.16/x
  3. Step 3: Cross multiply
    643,802.15x = 888,556.91 × 371,821.16
  4. Step 4: Simplify right side
    643,802.15x = 330,384,257,488.98
  5. Step 5: Solve for x
    x = 330,384,257,488.98/643,802.15
  6. Step 6: Final answer
    x = 513,176.70

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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.