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Finding the Fourth Proportional to 479,643.66, 661,890.86 and 264,779.10

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Solution

The fourth proportional to 479,643.66, 661,890.86 and 264,779.10 is: 365,385.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,643.66 : 661,890.86 = 264,779.10 : x
  2. Step 2: Convert to fraction form
    479,643.66/661,890.86 = 264,779.10/x
  3. Step 3: Cross multiply
    479,643.66x = 661,890.86 × 264,779.10
  4. Step 4: Simplify right side
    479,643.66x = 175,254,866,209.03
  5. Step 5: Solve for x
    x = 175,254,866,209.03/479,643.66
  6. Step 6: Final answer
    x = 365,385.56

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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.