Home / 426,092,819.86-638,574,204.66-218,822,858.25

Finding the Fourth Proportional to 426,092,819.86, 638,574,204.66 and 218,822,858.25

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Solution

The fourth proportional to 426,092,819.86, 638,574,204.66 and 218,822,858.25 is: 327,944,114.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,092,819.86 : 638,574,204.66 = 218,822,858.25 : x
  2. Step 2: Convert to fraction form
    426,092,819.86/638,574,204.66 = 218,822,858.25/x
  3. Step 3: Cross multiply
    426,092,819.86x = 638,574,204.66 × 218,822,858.25
  4. Step 4: Simplify right side
    426,092,819.86x = 139,734,632,668,421,664
  5. Step 5: Solve for x
    x = 139,734,632,668,421,664/426,092,819.86
  6. Step 6: Final answer
    x = 327,944,114.89

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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.