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Finding the Fourth Proportional to 1,064,939.62, 1,593,668.96 and 916,967.20

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Solution

The fourth proportional to 1,064,939.62, 1,593,668.96 and 916,967.20 is: 1,372,230.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,064,939.62 : 1,593,668.96 = 916,967.20 : x
  2. Step 2: Convert to fraction form
    1,064,939.62/1,593,668.96 = 916,967.20/x
  3. Step 3: Cross multiply
    1,064,939.62x = 1,593,668.96 × 916,967.20
  4. Step 4: Simplify right side
    1,064,939.62x = 1,461,342,163,978.11
  5. Step 5: Solve for x
    x = 1,461,342,163,978.11/1,064,939.62
  6. Step 6: Final answer
    x = 1,372,230.07

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