Home / 431,302,565.35-646,295,527.54-256,080,551.68

Finding the Fourth Proportional to 431,302,565.35, 646,295,527.54 and 256,080,551.68

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Solution

The fourth proportional to 431,302,565.35, 646,295,527.54 and 256,080,551.68 is: 383,729,957.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,302,565.35 : 646,295,527.54 = 256,080,551.68 : x
  2. Step 2: Convert to fraction form
    431,302,565.35/646,295,527.54 = 256,080,551.68/x
  3. Step 3: Cross multiply
    431,302,565.35x = 646,295,527.54 × 256,080,551.68
  4. Step 4: Simplify right side
    431,302,565.35x = 165,503,715,240,759,840
  5. Step 5: Solve for x
    x = 165,503,715,240,759,840/431,302,565.35
  6. Step 6: Final answer
    x = 383,729,957.89

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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.