Home / 989,743.36-1,483,888-315,436.64

Finding the Fourth Proportional to 989,743.36, 1,483,888 and 315,436.64

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Solution

The fourth proportional to 989,743.36, 1,483,888 and 315,436.64 is: 472,923.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    989,743.36 : 1,483,888 = 315,436.64 : x
  2. Step 2: Convert to fraction form
    989,743.36/1,483,888 = 315,436.64/x
  3. Step 3: Cross multiply
    989,743.36x = 1,483,888 × 315,436.64
  4. Step 4: Simplify right side
    989,743.36x = 468,072,644,856.32
  5. Step 5: Solve for x
    x = 468,072,644,856.32/989,743.36
  6. Step 6: Final answer
    x = 472,923.25

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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.