Home / 990,767.13-1,367,258.57-561,130.30

Finding the Fourth Proportional to 990,767.13, 1,367,258.57 and 561,130.30

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Solution

The fourth proportional to 990,767.13, 1,367,258.57 and 561,130.30 is: 774,359.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,767.13 : 1,367,258.57 = 561,130.30 : x
  2. Step 2: Convert to fraction form
    990,767.13/1,367,258.57 = 561,130.30/x
  3. Step 3: Cross multiply
    990,767.13x = 1,367,258.57 × 561,130.30
  4. Step 4: Simplify right side
    990,767.13x = 767,210,212,569.33
  5. Step 5: Solve for x
    x = 767,210,212,569.33/990,767.13
  6. Step 6: Final answer
    x = 774,359.78

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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.