Home / 287,853,255.69-431,678,855.06-80,535,956.46

Finding the Fourth Proportional to 287,853,255.69, 431,678,855.06 and 80,535,956.46

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Solution

The fourth proportional to 287,853,255.69, 431,678,855.06 and 80,535,956.46 is: 120,775,668.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,853,255.69 : 431,678,855.06 = 80,535,956.46 : x
  2. Step 2: Convert to fraction form
    287,853,255.69/431,678,855.06 = 80,535,956.46/x
  3. Step 3: Cross multiply
    287,853,255.69x = 431,678,855.06 × 80,535,956.46
  4. Step 4: Simplify right side
    287,853,255.69x = 34,765,669,473,656,416
  5. Step 5: Solve for x
    x = 34,765,669,473,656,416/287,853,255.69
  6. Step 6: Final answer
    x = 120,775,668.81

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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.