Home / 878,678,113.82-1,317,974,575.26-326,088,269.78

Finding the Fourth Proportional to 878,678,113.82, 1,317,974,575.26 and 326,088,269.78

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Solution

The fourth proportional to 878,678,113.82, 1,317,974,575.26 and 326,088,269.78 is: 489,116,596.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    878,678,113.82 : 1,317,974,575.26 = 326,088,269.78 : x
  2. Step 2: Convert to fraction form
    878,678,113.82/1,317,974,575.26 = 326,088,269.78/x
  3. Step 3: Cross multiply
    878,678,113.82x = 1,317,974,575.26 × 326,088,269.78
  4. Step 4: Simplify right side
    878,678,113.82x = 429,776,048,860,563,776
  5. Step 5: Solve for x
    x = 429,776,048,860,563,776/878,678,113.82
  6. Step 6: Final answer
    x = 489,116,596.97

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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.