Home / 629,756.18-869,030.75-357,786.33

Finding the Fourth Proportional to 629,756.18, 869,030.75 and 357,786.33

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Solution

The fourth proportional to 629,756.18, 869,030.75 and 357,786.33 is: 493,726.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,756.18 : 869,030.75 = 357,786.33 : x
  2. Step 2: Convert to fraction form
    629,756.18/869,030.75 = 357,786.33/x
  3. Step 3: Cross multiply
    629,756.18x = 869,030.75 × 357,786.33
  4. Step 4: Simplify right side
    629,756.18x = 310,927,320,910.72
  5. Step 5: Solve for x
    x = 310,927,320,910.72/629,756.18
  6. Step 6: Final answer
    x = 493,726.51

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Double scale
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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.