Home / 498,587.24-688,040.91-304,980.77

Finding the Fourth Proportional to 498,587.24, 688,040.91 and 304,980.77

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Solution

The fourth proportional to 498,587.24, 688,040.91 and 304,980.77 is: 420,867.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,587.24 : 688,040.91 = 304,980.77 : x
  2. Step 2: Convert to fraction form
    498,587.24/688,040.91 = 304,980.77/x
  3. Step 3: Cross multiply
    498,587.24x = 688,040.91 × 304,980.77
  4. Step 4: Simplify right side
    498,587.24x = 209,839,243,083.10
  5. Step 5: Solve for x
    x = 209,839,243,083.10/498,587.24
  6. Step 6: Final answer
    x = 420,867.66

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1.5x scale

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.