Home / 489,974,921.80-734,962,382.70-217,345,688.80

Finding the Fourth Proportional to 489,974,921.80, 734,962,382.70 and 217,345,688.80

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Solution

The fourth proportional to 489,974,921.80, 734,962,382.70 and 217,345,688.80 is: 326,018,533.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,974,921.80 : 734,962,382.70 = 217,345,688.80 : x
  2. Step 2: Convert to fraction form
    489,974,921.80/734,962,382.70 = 217,345,688.80/x
  3. Step 3: Cross multiply
    489,974,921.80x = 734,962,382.70 × 217,345,688.80
  4. Step 4: Simplify right side
    489,974,921.80x = 159,740,905,310,020,736
  5. Step 5: Solve for x
    x = 159,740,905,310,020,736/489,974,921.80
  6. Step 6: Final answer
    x = 326,018,533.20

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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.