Home / 830,015.10-1,245,022.65-578,072.70

Finding the Fourth Proportional to 830,015.10, 1,245,022.65 and 578,072.70

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Solution

The fourth proportional to 830,015.10, 1,245,022.65 and 578,072.70 is: 867,109.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    830,015.10 : 1,245,022.65 = 578,072.70 : x
  2. Step 2: Convert to fraction form
    830,015.10/1,245,022.65 = 578,072.70/x
  3. Step 3: Cross multiply
    830,015.10x = 1,245,022.65 × 578,072.70
  4. Step 4: Simplify right side
    830,015.10x = 719,713,604,846.66
  5. Step 5: Solve for x
    x = 719,713,604,846.66/830,015.10
  6. Step 6: Final answer
    x = 867,109.05

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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.