Home / 820,074.54-1,131,703.36-457,498.40

Finding the Fourth Proportional to 820,074.54, 1,131,703.36 and 457,498.40

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Solution

The fourth proportional to 820,074.54, 1,131,703.36 and 457,498.40 is: 631,348.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,074.54 : 1,131,703.36 = 457,498.40 : x
  2. Step 2: Convert to fraction form
    820,074.54/1,131,703.36 = 457,498.40/x
  3. Step 3: Cross multiply
    820,074.54x = 1,131,703.36 × 457,498.40
  4. Step 4: Simplify right side
    820,074.54x = 517,752,479,875.76
  5. Step 5: Solve for x
    x = 517,752,479,875.76/820,074.54
  6. Step 6: Final answer
    x = 631,348.07

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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.