Home / 918,645.08-1,377,878.51-278,954.35

Finding the Fourth Proportional to 918,645.08, 1,377,878.51 and 278,954.35

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Solution

The fourth proportional to 918,645.08, 1,377,878.51 and 278,954.35 is: 418,404.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,645.08 : 1,377,878.51 = 278,954.35 : x
  2. Step 2: Convert to fraction form
    918,645.08/1,377,878.51 = 278,954.35/x
  3. Step 3: Cross multiply
    918,645.08x = 1,377,878.51 × 278,954.35
  4. Step 4: Simplify right side
    918,645.08x = 384,365,201,388.71
  5. Step 5: Solve for x
    x = 384,365,201,388.71/918,645.08
  6. Step 6: Final answer
    x = 418,404.47

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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.