Home / 6,989,254.36-9,642,859.09-4,086,590.20

Finding the Fourth Proportional to 6,989,254.36, 9,642,859.09 and 4,086,590.20

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Solution

The fourth proportional to 6,989,254.36, 9,642,859.09 and 4,086,590.20 is: 5,638,142.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,989,254.36 : 9,642,859.09 = 4,086,590.20 : x
  2. Step 2: Convert to fraction form
    6,989,254.36/9,642,859.09 = 4,086,590.20/x
  3. Step 3: Cross multiply
    6,989,254.36x = 9,642,859.09 × 4,086,590.20
  4. Step 4: Simplify right side
    6,989,254.36x = 39,406,413,445,838.37
  5. Step 5: Solve for x
    x = 39,406,413,445,838.37/6,989,254.36
  6. Step 6: Final answer
    x = 5,638,142.70

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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.