Home / 738,318.88-1,018,880.77-398,787.13

Finding the Fourth Proportional to 738,318.88, 1,018,880.77 and 398,787.13

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Solution

The fourth proportional to 738,318.88, 1,018,880.77 and 398,787.13 is: 550,326.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,318.88 : 1,018,880.77 = 398,787.13 : x
  2. Step 2: Convert to fraction form
    738,318.88/1,018,880.77 = 398,787.13/x
  3. Step 3: Cross multiply
    738,318.88x = 1,018,880.77 × 398,787.13
  4. Step 4: Simplify right side
    738,318.88x = 406,316,532,986.09
  5. Step 5: Solve for x
    x = 406,316,532,986.09/738,318.88
  6. Step 6: Final answer
    x = 550,326.62

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Double scale
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1.5x scale

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.