Home / 287,853,254.69-431,678,853.56-80,535,955.46

Finding the Fourth Proportional to 287,853,254.69, 431,678,853.56 and 80,535,955.46

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Solution

The fourth proportional to 287,853,254.69, 431,678,853.56 and 80,535,955.46 is: 120,775,667.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,853,254.69 : 431,678,853.56 = 80,535,955.46 : x
  2. Step 2: Convert to fraction form
    287,853,254.69/431,678,853.56 = 80,535,955.46/x
  3. Step 3: Cross multiply
    287,853,254.69x = 431,678,853.56 × 80,535,955.46
  4. Step 4: Simplify right side
    287,853,254.69x = 34,765,668,921,374,968
  5. Step 5: Solve for x
    x = 34,765,668,921,374,968/287,853,254.69
  6. Step 6: Final answer
    x = 120,775,667.31

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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.