Home / 790,807.70-1,186,366.46-258,185.72

Finding the Fourth Proportional to 790,807.70, 1,186,366.46 and 258,185.72

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Solution

The fourth proportional to 790,807.70, 1,186,366.46 and 258,185.72 is: 387,329.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    790,807.70 : 1,186,366.46 = 258,185.72 : x
  2. Step 2: Convert to fraction form
    790,807.70/1,186,366.46 = 258,185.72/x
  3. Step 3: Cross multiply
    790,807.70x = 1,186,366.46 × 258,185.72
  4. Step 4: Simplify right side
    790,807.70x = 306,302,878,658.95
  5. Step 5: Solve for x
    x = 306,302,878,658.95/790,807.70
  6. Step 6: Final answer
    x = 387,329.16

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Double scale
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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.