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Finding the Fourth Proportional to 680,578.73, 939,210.67 and 370,490.29

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Solution

The fourth proportional to 680,578.73, 939,210.67 and 370,490.29 is: 511,283.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,578.73 : 939,210.67 = 370,490.29 : x
  2. Step 2: Convert to fraction form
    680,578.73/939,210.67 = 370,490.29/x
  3. Step 3: Cross multiply
    680,578.73x = 939,210.67 × 370,490.29
  4. Step 4: Simplify right side
    680,578.73x = 347,968,431,614.48
  5. Step 5: Solve for x
    x = 347,968,431,614.48/680,578.73
  6. Step 6: Final answer
    x = 511,283.14

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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.