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Finding the Fourth Proportional to 556,779.07, 768,357.30 and 302,130.28

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Solution

The fourth proportional to 556,779.07, 768,357.30 and 302,130.28 is: 416,940.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,779.07 : 768,357.30 = 302,130.28 : x
  2. Step 2: Convert to fraction form
    556,779.07/768,357.30 = 302,130.28/x
  3. Step 3: Cross multiply
    556,779.07x = 768,357.30 × 302,130.28
  4. Step 4: Simplify right side
    556,779.07x = 232,144,006,189.04
  5. Step 5: Solve for x
    x = 232,144,006,189.04/556,779.07
  6. Step 6: Final answer
    x = 416,940.97

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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.