Home / 629,756.51-869,031.20-357,786.66

Finding the Fourth Proportional to 629,756.51, 869,031.20 and 357,786.66

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Solution

The fourth proportional to 629,756.51, 869,031.20 and 357,786.66 is: 493,726.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,756.51 : 869,031.20 = 357,786.66 : x
  2. Step 2: Convert to fraction form
    629,756.51/869,031.20 = 357,786.66/x
  3. Step 3: Cross multiply
    629,756.51x = 869,031.20 × 357,786.66
  4. Step 4: Simplify right side
    629,756.51x = 310,927,768,694.86
  5. Step 5: Solve for x
    x = 310,927,768,694.86/629,756.51
  6. Step 6: Final answer
    x = 493,726.97

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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.