Home / 989,678.40-1,484,597.76-279,712.32

Finding the Fourth Proportional to 989,678.40, 1,484,597.76 and 279,712.32

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Solution

The fourth proportional to 989,678.40, 1,484,597.76 and 279,712.32 is: 419,591.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    989,678.40 : 1,484,597.76 = 279,712.32 : x
  2. Step 2: Convert to fraction form
    989,678.40/1,484,597.76 = 279,712.32/x
  3. Step 3: Cross multiply
    989,678.40x = 1,484,597.76 × 279,712.32
  4. Step 4: Simplify right side
    989,678.40x = 415,260,283,716.40
  5. Step 5: Solve for x
    x = 415,260,283,716.40/989,678.40
  6. Step 6: Final answer
    x = 419,591.14

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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.