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Finding the Fourth Proportional to 556,779.69, 768,358.01 and 302,130.87

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Solution

The fourth proportional to 556,779.69, 768,358.01 and 302,130.87 is: 416,941.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,779.69 : 768,358.01 = 302,130.87 : x
  2. Step 2: Convert to fraction form
    556,779.69/768,358.01 = 302,130.87/x
  3. Step 3: Cross multiply
    556,779.69x = 768,358.01 × 302,130.87
  4. Step 4: Simplify right side
    556,779.69x = 232,144,674,032.77
  5. Step 5: Solve for x
    x = 232,144,674,032.77/556,779.69
  6. Step 6: Final answer
    x = 416,941.71

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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.