Home / 990,823.47-1,367,420.72-561,180.03

Finding the Fourth Proportional to 990,823.47, 1,367,420.72 and 561,180.03

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Solution

The fourth proportional to 990,823.47, 1,367,420.72 and 561,180.03 is: 774,476.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,823.47 : 1,367,420.72 = 561,180.03 : x
  2. Step 2: Convert to fraction form
    990,823.47/1,367,420.72 = 561,180.03/x
  3. Step 3: Cross multiply
    990,823.47x = 1,367,420.72 × 561,180.03
  4. Step 4: Simplify right side
    990,823.47x = 767,369,197,866.32
  5. Step 5: Solve for x
    x = 767,369,197,866.32/990,823.47
  6. Step 6: Final answer
    x = 774,476.20

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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.