Home / 990,928.16-1,367,434.95-561,211.43

Finding the Fourth Proportional to 990,928.16, 1,367,434.95 and 561,211.43

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Solution

The fourth proportional to 990,928.16, 1,367,434.95 and 561,211.43 is: 774,445.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,928.16 : 1,367,434.95 = 561,211.43 : x
  2. Step 2: Convert to fraction form
    990,928.16/1,367,434.95 = 561,211.43/x
  3. Step 3: Cross multiply
    990,928.16x = 1,367,434.95 × 561,211.43
  4. Step 4: Simplify right side
    990,928.16x = 767,420,123,721.48
  5. Step 5: Solve for x
    x = 767,420,123,721.48/990,928.16
  6. Step 6: Final answer
    x = 774,445.77

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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.