Home / 409,699,876.70-565,384,621.98-221,526,829.16

Finding the Fourth Proportional to 409,699,876.70, 565,384,621.98 and 221,526,829.16

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Solution

The fourth proportional to 409,699,876.70, 565,384,621.98 and 221,526,829.16 is: 305,706,371.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    409,699,876.70 : 565,384,621.98 = 221,526,829.16 : x
  2. Step 2: Convert to fraction form
    409,699,876.70/565,384,621.98 = 221,526,829.16/x
  3. Step 3: Cross multiply
    409,699,876.70x = 565,384,621.98 × 221,526,829.16
  4. Step 4: Simplify right side
    409,699,876.70x = 125,247,862,563,054,640
  5. Step 5: Solve for x
    x = 125,247,862,563,054,640/409,699,876.70
  6. Step 6: Final answer
    x = 305,706,371.14

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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.