Home / 6,919,821.29-9,549,643.49-3,979,640.68

Finding the Fourth Proportional to 6,919,821.29, 9,549,643.49 and 3,979,640.68

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Solution

The fourth proportional to 6,919,821.29, 9,549,643.49 and 3,979,640.68 is: 5,492,070.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,919,821.29 : 9,549,643.49 = 3,979,640.68 : x
  2. Step 2: Convert to fraction form
    6,919,821.29/9,549,643.49 = 3,979,640.68/x
  3. Step 3: Cross multiply
    6,919,821.29x = 9,549,643.49 × 3,979,640.68
  4. Step 4: Simplify right side
    6,919,821.29x = 38,004,149,712,301.17
  5. Step 5: Solve for x
    x = 38,004,149,712,301.17/6,919,821.29
  6. Step 6: Final answer
    x = 5,492,070.98

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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.