Home / 1,391,020.92-1,919,633.22-779,168.52

Finding the Fourth Proportional to 1,391,020.92, 1,919,633.22 and 779,168.52

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Solution

The fourth proportional to 1,391,020.92, 1,919,633.22 and 779,168.52 is: 1,075,266.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,391,020.92 : 1,919,633.22 = 779,168.52 : x
  2. Step 2: Convert to fraction form
    1,391,020.92/1,919,633.22 = 779,168.52/x
  3. Step 3: Cross multiply
    1,391,020.92x = 1,919,633.22 × 779,168.52
  4. Step 4: Simplify right side
    1,391,020.92x = 1,495,717,774,970.23
  5. Step 5: Solve for x
    x = 1,495,717,774,970.23/1,391,020.92
  6. Step 6: Final answer
    x = 1,075,266.20

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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.