Home / 677,039.08-934,279.22-390,542.08

Finding the Fourth Proportional to 677,039.08, 934,279.22 and 390,542.08

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Solution

The fourth proportional to 677,039.08, 934,279.22 and 390,542.08 is: 538,928.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    677,039.08 : 934,279.22 = 390,542.08 : x
  2. Step 2: Convert to fraction form
    677,039.08/934,279.22 = 390,542.08/x
  3. Step 3: Cross multiply
    677,039.08x = 934,279.22 × 390,542.08
  4. Step 4: Simplify right side
    677,039.08x = 364,875,349,879.58
  5. Step 5: Solve for x
    x = 364,875,349,879.58/677,039.08
  6. Step 6: Final answer
    x = 538,928.05

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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.