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Finding the Fourth Proportional to 1,061,649.47, 1,590,899.01 and 779,788.91

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Solution

The fourth proportional to 1,061,649.47, 1,590,899.01 and 779,788.91 is: 1,168,526.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,061,649.47 : 1,590,899.01 = 779,788.91 : x
  2. Step 2: Convert to fraction form
    1,061,649.47/1,590,899.01 = 779,788.91/x
  3. Step 3: Cross multiply
    1,061,649.47x = 1,590,899.01 × 779,788.91
  4. Step 4: Simplify right side
    1,061,649.47x = 1,240,565,396,973.48
  5. Step 5: Solve for x
    x = 1,240,565,396,973.48/1,061,649.47
  6. Step 6: Final answer
    x = 1,168,526.37

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.