Home / 918,643.60-1,377,876.30-278,952.89

Finding the Fourth Proportional to 918,643.60, 1,377,876.30 and 278,952.89

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Solution

The fourth proportional to 918,643.60, 1,377,876.30 and 278,952.89 is: 418,402.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,643.60 : 1,377,876.30 = 278,952.89 : x
  2. Step 2: Convert to fraction form
    918,643.60/1,377,876.30 = 278,952.89/x
  3. Step 3: Cross multiply
    918,643.60x = 1,377,876.30 × 278,952.89
  4. Step 4: Simplify right side
    918,643.60x = 384,362,571,826.54
  5. Step 5: Solve for x
    x = 384,362,571,826.54/918,643.60
  6. Step 6: Final answer
    x = 418,402.27

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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.