Home / 394,782.04-592,018.62-128,477.80

Finding the Fourth Proportional to 394,782.04, 592,018.62 and 128,477.80

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Solution

The fourth proportional to 394,782.04, 592,018.62 and 128,477.80 is: 192,666.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,782.04 : 592,018.62 = 128,477.80 : x
  2. Step 2: Convert to fraction form
    394,782.04/592,018.62 = 128,477.80/x
  3. Step 3: Cross multiply
    394,782.04x = 592,018.62 × 128,477.80
  4. Step 4: Simplify right side
    394,782.04x = 76,061,249,856.64
  5. Step 5: Solve for x
    x = 76,061,249,856.64/394,782.04
  6. Step 6: Final answer
    x = 192,666.44

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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.