Home / 431,527,208.40-647,353,798.20-140,344,779.60

Finding the Fourth Proportional to 431,527,208.40, 647,353,798.20 and 140,344,779.60

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Solution

The fourth proportional to 431,527,208.40, 647,353,798.20 and 140,344,779.60 is: 210,537,654.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,527,208.40 : 647,353,798.20 = 140,344,779.60 : x
  2. Step 2: Convert to fraction form
    431,527,208.40/647,353,798.20 = 140,344,779.60/x
  3. Step 3: Cross multiply
    431,527,208.40x = 647,353,798.20 × 140,344,779.60
  4. Step 4: Simplify right side
    431,527,208.40x = 90,852,726,131,601,872
  5. Step 5: Solve for x
    x = 90,852,726,131,601,872/431,527,208.40
  6. Step 6: Final answer
    x = 210,537,654.09

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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.