Home / 820,171.95-1,230,257.93-459,973.05

Finding the Fourth Proportional to 820,171.95, 1,230,257.93 and 459,973.05

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Solution

The fourth proportional to 820,171.95, 1,230,257.93 and 459,973.05 is: 689,959.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,171.95 : 1,230,257.93 = 459,973.05 : x
  2. Step 2: Convert to fraction form
    820,171.95/1,230,257.93 = 459,973.05/x
  3. Step 3: Cross multiply
    820,171.95x = 1,230,257.93 × 459,973.05
  4. Step 4: Simplify right side
    820,171.95x = 565,885,490,048.92
  5. Step 5: Solve for x
    x = 565,885,490,048.92/820,171.95
  6. Step 6: Final answer
    x = 689,959.58

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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.