Home / 426,060,981.40-639,112,467.30-221,987,637.40

Finding the Fourth Proportional to 426,060,981.40, 639,112,467.30 and 221,987,637.40

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Solution

The fourth proportional to 426,060,981.40, 639,112,467.30 and 221,987,637.40 is: 332,992,395.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,060,981.40 : 639,112,467.30 = 221,987,637.40 : x
  2. Step 2: Convert to fraction form
    426,060,981.40/639,112,467.30 = 221,987,637.40/x
  3. Step 3: Cross multiply
    426,060,981.40x = 639,112,467.30 × 221,987,637.40
  4. Step 4: Simplify right side
    426,060,981.40x = 141,875,066,648,811,744
  5. Step 5: Solve for x
    x = 141,875,066,648,811,744/426,060,981.40
  6. Step 6: Final answer
    x = 332,992,395.09

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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.