Home / 465,249,986.46-642,016,133.91-256,394,460.78

Finding the Fourth Proportional to 465,249,986.46, 642,016,133.91 and 256,394,460.78

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Solution

The fourth proportional to 465,249,986.46, 642,016,133.91 and 256,394,460.78 is: 353,808,458.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    465,249,986.46 : 642,016,133.91 = 256,394,460.78 : x
  2. Step 2: Convert to fraction form
    465,249,986.46/642,016,133.91 = 256,394,460.78/x
  3. Step 3: Cross multiply
    465,249,986.46x = 642,016,133.91 × 256,394,460.78
  4. Step 4: Simplify right side
    465,249,986.46x = 164,609,380,465,914,720
  5. Step 5: Solve for x
    x = 164,609,380,465,914,720/465,249,986.46
  6. Step 6: Final answer
    x = 353,808,458.37

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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.