Home / 426,088,950.93-638,568,401.22-218,818,989.30

Finding the Fourth Proportional to 426,088,950.93, 638,568,401.22 and 218,818,989.30

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Solution

The fourth proportional to 426,088,950.93, 638,568,401.22 and 218,818,989.30 is: 327,938,313.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,088,950.93 : 638,568,401.22 = 218,818,989.30 : x
  2. Step 2: Convert to fraction form
    426,088,950.93/638,568,401.22 = 218,818,989.30/x
  3. Step 3: Cross multiply
    426,088,950.93x = 638,568,401.22 × 218,818,989.30
  4. Step 4: Simplify right side
    426,088,950.93x = 139,730,892,153,877,296
  5. Step 5: Solve for x
    x = 139,730,892,153,877,296/426,088,950.93
  6. Step 6: Final answer
    x = 327,938,313.93

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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.