Home / 374,288,719.80-561,470,598.90-128,612,998.20

Finding the Fourth Proportional to 374,288,719.80, 561,470,598.90 and 128,612,998.20

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Solution

The fourth proportional to 374,288,719.80, 561,470,598.90 and 128,612,998.20 is: 192,932,389.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    374,288,719.80 : 561,470,598.90 = 128,612,998.20 : x
  2. Step 2: Convert to fraction form
    374,288,719.80/561,470,598.90 = 128,612,998.20/x
  3. Step 3: Cross multiply
    374,288,719.80x = 561,470,598.90 × 128,612,998.20
  4. Step 4: Simplify right side
    374,288,719.80x = 72,212,417,125,678,624
  5. Step 5: Solve for x
    x = 72,212,417,125,678,624/374,288,719.80
  6. Step 6: Final answer
    x = 192,932,389.64

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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.