Home / 563,979.36-778,292.64-309,332.64

Finding the Fourth Proportional to 563,979.36, 778,292.64 and 309,332.64

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Solution

The fourth proportional to 563,979.36, 778,292.64 and 309,332.64 is: 426,879.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    563,979.36 : 778,292.64 = 309,332.64 : x
  2. Step 2: Convert to fraction form
    563,979.36/778,292.64 = 309,332.64/x
  3. Step 3: Cross multiply
    563,979.36x = 778,292.64 × 309,332.64
  4. Step 4: Simplify right side
    563,979.36x = 240,751,317,023.77
  5. Step 5: Solve for x
    x = 240,751,317,023.77/563,979.36
  6. Step 6: Final answer
    x = 426,879.66

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.