Home / 413,771,215.40-620,569,731.90-209,106,895.40

Finding the Fourth Proportional to 413,771,215.40, 620,569,731.90 and 209,106,895.40

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Solution

The fourth proportional to 413,771,215.40, 620,569,731.90 and 209,106,895.40 is: 313,616,329.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    413,771,215.40 : 620,569,731.90 = 209,106,895.40 : x
  2. Step 2: Convert to fraction form
    413,771,215.40/620,569,731.90 = 209,106,895.40/x
  3. Step 3: Cross multiply
    413,771,215.40x = 620,569,731.90 × 209,106,895.40
  4. Step 4: Simplify right side
    413,771,215.40x = 129,765,410,016,819,344
  5. Step 5: Solve for x
    x = 129,765,410,016,819,344/413,771,215.40
  6. Step 6: Final answer
    x = 313,616,329.96

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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.