Home / 400,453,442.28-552,681,736.47-289,303,891.20

Finding the Fourth Proportional to 400,453,442.28, 552,681,736.47 and 289,303,891.20

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Solution

The fourth proportional to 400,453,442.28, 552,681,736.47 and 289,303,891.20 is: 399,279,816.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,453,442.28 : 552,681,736.47 = 289,303,891.20 : x
  2. Step 2: Convert to fraction form
    400,453,442.28/552,681,736.47 = 289,303,891.20/x
  3. Step 3: Cross multiply
    400,453,442.28x = 552,681,736.47 × 289,303,891.20
  4. Step 4: Simplify right side
    400,453,442.28x = 159,892,976,955,943,968
  5. Step 5: Solve for x
    x = 159,892,976,955,943,968/400,453,442.28
  6. Step 6: Final answer
    x = 399,279,816.51

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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.