Home / 809,487,856.73-1,117,096,807.37-438,209,888.11

Finding the Fourth Proportional to 809,487,856.73, 1,117,096,807.37 and 438,209,888.11

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Solution

The fourth proportional to 809,487,856.73, 1,117,096,807.37 and 438,209,888.11 is: 604,731,575.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,487,856.73 : 1,117,096,807.37 = 438,209,888.11 : x
  2. Step 2: Convert to fraction form
    809,487,856.73/1,117,096,807.37 = 438,209,888.11/x
  3. Step 3: Cross multiply
    809,487,856.73x = 1,117,096,807.37 × 438,209,888.11
  4. Step 4: Simplify right side
    809,487,856.73x = 489,522,866,965,645,888
  5. Step 5: Solve for x
    x = 489,522,866,965,645,888/809,487,856.73
  6. Step 6: Final answer
    x = 604,731,575.52

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.