Home / 19,125,678.09-28,688,828.54-5,478,771.44

Finding the Fourth Proportional to 19,125,678.09, 28,688,828.54 and 5,478,771.44

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Solution

The fourth proportional to 19,125,678.09, 28,688,828.54 and 5,478,771.44 is: 8,218,246.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,125,678.09 : 28,688,828.54 = 5,478,771.44 : x
  2. Step 2: Convert to fraction form
    19,125,678.09/28,688,828.54 = 5,478,771.44/x
  3. Step 3: Cross multiply
    19,125,678.09x = 28,688,828.54 × 5,478,771.44
  4. Step 4: Simplify right side
    19,125,678.09x = 157,179,534,281,170.88
  5. Step 5: Solve for x
    x = 157,179,534,281,170.88/19,125,678.09
  6. Step 6: Final answer
    x = 8,218,246.36

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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.