Home / 990,823.66-1,367,420.98-561,180.22

Finding the Fourth Proportional to 990,823.66, 1,367,420.98 and 561,180.22

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Solution

The fourth proportional to 990,823.66, 1,367,420.98 and 561,180.22 is: 774,476.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,823.66 : 1,367,420.98 = 561,180.22 : x
  2. Step 2: Convert to fraction form
    990,823.66/1,367,420.98 = 561,180.22/x
  3. Step 3: Cross multiply
    990,823.66x = 1,367,420.98 × 561,180.22
  4. Step 4: Simplify right side
    990,823.66x = 767,369,606,389.02
  5. Step 5: Solve for x
    x = 767,369,606,389.02/990,823.66
  6. Step 6: Final answer
    x = 774,476.47

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1.5x scale

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.