Home / 413,515,436.80-620,273,155.20-260,460,428.80

Finding the Fourth Proportional to 413,515,436.80, 620,273,155.20 and 260,460,428.80

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Solution

The fourth proportional to 413,515,436.80, 620,273,155.20 and 260,460,428.80 is: 390,690,643.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    413,515,436.80 : 620,273,155.20 = 260,460,428.80 : x
  2. Step 2: Convert to fraction form
    413,515,436.80/620,273,155.20 = 260,460,428.80/x
  3. Step 3: Cross multiply
    413,515,436.80x = 620,273,155.20 × 260,460,428.80
  4. Step 4: Simplify right side
    413,515,436.80x = 161,556,611,976,520,960
  5. Step 5: Solve for x
    x = 161,556,611,976,520,960/413,515,436.80
  6. Step 6: Final answer
    x = 390,690,643.20

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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.