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Finding the Fourth Proportional to 556,779.69, 768,370.86 and 302,131.08

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Solution

The fourth proportional to 556,779.69, 768,370.86 and 302,131.08 is: 416,948.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,779.69 : 768,370.86 = 302,131.08 : x
  2. Step 2: Convert to fraction form
    556,779.69/768,370.86 = 302,131.08/x
  3. Step 3: Cross multiply
    556,779.69x = 768,370.86 × 302,131.08
  4. Step 4: Simplify right side
    556,779.69x = 232,148,717,772.33
  5. Step 5: Solve for x
    x = 232,148,717,772.33/556,779.69
  6. Step 6: Final answer
    x = 416,948.97

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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.