Home / 548,623.40-821,331.30-391,159.40

Finding the Fourth Proportional to 548,623.40, 821,331.30 and 391,159.40

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Solution

The fourth proportional to 548,623.40, 821,331.30 and 391,159.40 is: 585,595.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,623.40 : 821,331.30 = 391,159.40 : x
  2. Step 2: Convert to fraction form
    548,623.40/821,331.30 = 391,159.40/x
  3. Step 3: Cross multiply
    548,623.40x = 821,331.30 × 391,159.40
  4. Step 4: Simplify right side
    548,623.40x = 321,271,458,509.22
  5. Step 5: Solve for x
    x = 321,271,458,509.22/548,623.40
  6. Step 6: Final answer
    x = 585,595.62

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.