Home / 426,339,597.40-638,502,012.42-208,139,369.56

Finding the Fourth Proportional to 426,339,597.40, 638,502,012.42 and 208,139,369.56

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Solution

The fourth proportional to 426,339,597.40, 638,502,012.42 and 208,139,369.56 is: 311,717,248.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,339,597.40 : 638,502,012.42 = 208,139,369.56 : x
  2. Step 2: Convert to fraction form
    426,339,597.40/638,502,012.42 = 208,139,369.56/x
  3. Step 3: Cross multiply
    426,339,597.40x = 638,502,012.42 × 208,139,369.56
  4. Step 4: Simplify right side
    426,339,597.40x = 132,897,406,327,890,080
  5. Step 5: Solve for x
    x = 132,897,406,327,890,080/426,339,597.40
  6. Step 6: Final answer
    x = 311,717,248.73

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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.