Home / 709,933.04-979,710.64-387,650.24

Finding the Fourth Proportional to 709,933.04, 979,710.64 and 387,650.24

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Solution

The fourth proportional to 709,933.04, 979,710.64 and 387,650.24 is: 534,958.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,933.04 : 979,710.64 = 387,650.24 : x
  2. Step 2: Convert to fraction form
    709,933.04/979,710.64 = 387,650.24/x
  3. Step 3: Cross multiply
    709,933.04x = 979,710.64 × 387,650.24
  4. Step 4: Simplify right side
    709,933.04x = 379,785,064,726.55
  5. Step 5: Solve for x
    x = 379,785,064,726.55/709,933.04
  6. Step 6: Final answer
    x = 534,958.99

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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.