Home / 374,288,728.80-561,470,612.40-128,613,007.20

Finding the Fourth Proportional to 374,288,728.80, 561,470,612.40 and 128,613,007.20

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Solution

The fourth proportional to 374,288,728.80, 561,470,612.40 and 128,613,007.20 is: 192,932,403.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    374,288,728.80 : 561,470,612.40 = 128,613,007.20 : x
  2. Step 2: Convert to fraction form
    374,288,728.80/561,470,612.40 = 128,613,007.20/x
  3. Step 3: Cross multiply
    374,288,728.80x = 561,470,612.40 × 128,613,007.20
  4. Step 4: Simplify right side
    374,288,728.80x = 72,212,423,915,189,600
  5. Step 5: Solve for x
    x = 72,212,423,915,189,600/374,288,728.80
  6. Step 6: Final answer
    x = 192,932,403.14

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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.