Home / 708,418.32-977,588.64-386,121.48

Finding the Fourth Proportional to 708,418.32, 977,588.64 and 386,121.48

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Solution

The fourth proportional to 708,418.32, 977,588.64 and 386,121.48 is: 532,832.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    708,418.32 : 977,588.64 = 386,121.48 : x
  2. Step 2: Convert to fraction form
    708,418.32/977,588.64 = 386,121.48/x
  3. Step 3: Cross multiply
    708,418.32x = 977,588.64 × 386,121.48
  4. Step 4: Simplify right side
    708,418.32x = 377,467,972,507.99
  5. Step 5: Solve for x
    x = 377,467,972,507.99/708,418.32
  6. Step 6: Final answer
    x = 532,832.03

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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.