Home / 918,646.05-1,377,879.98-278,955.32

Finding the Fourth Proportional to 918,646.05, 1,377,879.98 and 278,955.32

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Solution

The fourth proportional to 918,646.05, 1,377,879.98 and 278,955.32 is: 418,405.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,646.05 : 1,377,879.98 = 278,955.32 : x
  2. Step 2: Convert to fraction form
    918,646.05/1,377,879.98 = 278,955.32/x
  3. Step 3: Cross multiply
    918,646.05x = 1,377,879.98 × 278,955.32
  4. Step 4: Simplify right side
    918,646.05x = 384,366,950,742.49
  5. Step 5: Solve for x
    x = 384,366,950,742.49/918,646.05
  6. Step 6: Final answer
    x = 418,405.93

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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.