Home / 990,872.16-1,367,357.81-561,155.39

Finding the Fourth Proportional to 990,872.16, 1,367,357.81 and 561,155.39

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Solution

The fourth proportional to 990,872.16, 1,367,357.81 and 561,155.39 is: 774,368.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,872.16 : 1,367,357.81 = 561,155.39 : x
  2. Step 2: Convert to fraction form
    990,872.16/1,367,357.81 = 561,155.39/x
  3. Step 3: Cross multiply
    990,872.16x = 1,367,357.81 × 561,155.39
  4. Step 4: Simplify right side
    990,872.16x = 767,300,195,497.53
  5. Step 5: Solve for x
    x = 767,300,195,497.53/990,872.16
  6. Step 6: Final answer
    x = 774,368.51

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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.