Home / 438,855,818.86-658,213,654.88-127,890,696.69

Finding the Fourth Proportional to 438,855,818.86, 658,213,654.88 and 127,890,696.69

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Solution

The fourth proportional to 438,855,818.86, 658,213,654.88 and 127,890,696.69 is: 191,815,624.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,855,818.86 : 658,213,654.88 = 127,890,696.69 : x
  2. Step 2: Convert to fraction form
    438,855,818.86/658,213,654.88 = 127,890,696.69/x
  3. Step 3: Cross multiply
    438,855,818.86x = 658,213,654.88 × 127,890,696.69
  4. Step 4: Simplify right side
    438,855,818.86x = 84,179,402,892,417,472
  5. Step 5: Solve for x
    x = 84,179,402,892,417,472/438,855,818.86
  6. Step 6: Final answer
    x = 191,815,624.35

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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.