Home / 920,151.16-1,379,107.69-492,636.40

Finding the Fourth Proportional to 920,151.16, 1,379,107.69 and 492,636.40

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Solution

The fourth proportional to 920,151.16, 1,379,107.69 and 492,636.40 is: 738,355.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,151.16 : 1,379,107.69 = 492,636.40 : x
  2. Step 2: Convert to fraction form
    920,151.16/1,379,107.69 = 492,636.40/x
  3. Step 3: Cross multiply
    920,151.16x = 1,379,107.69 × 492,636.40
  4. Step 4: Simplify right side
    920,151.16x = 679,398,642,934.56
  5. Step 5: Solve for x
    x = 679,398,642,934.56/920,151.16
  6. Step 6: Final answer
    x = 738,355.47

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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.