Home / 405,653,019.05-605,068,948.57-368,412,981.22

Finding the Fourth Proportional to 405,653,019.05, 605,068,948.57 and 368,412,981.22

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Solution

The fourth proportional to 405,653,019.05, 605,068,948.57 and 368,412,981.22 is: 549,521,992.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,653,019.05 : 605,068,948.57 = 368,412,981.22 : x
  2. Step 2: Convert to fraction form
    405,653,019.05/605,068,948.57 = 368,412,981.22/x
  3. Step 3: Cross multiply
    405,653,019.05x = 605,068,948.57 × 368,412,981.22
  4. Step 4: Simplify right side
    405,653,019.05x = 222,915,255,187,680,128
  5. Step 5: Solve for x
    x = 222,915,255,187,680,128/405,653,019.05
  6. Step 6: Final answer
    x = 549,521,992.24

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.