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Finding the Fourth Proportional to 661,814.15, 992,830.57 and 262,457.01

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Solution

The fourth proportional to 661,814.15, 992,830.57 and 262,457.01 is: 393,728.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,814.15 : 992,830.57 = 262,457.01 : x
  2. Step 2: Convert to fraction form
    661,814.15/992,830.57 = 262,457.01/x
  3. Step 3: Cross multiply
    661,814.15x = 992,830.57 × 262,457.01
  4. Step 4: Simplify right side
    661,814.15x = 260,575,342,182.65
  5. Step 5: Solve for x
    x = 260,575,342,182.65/661,814.15
  6. Step 6: Final answer
    x = 393,728.88

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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.