Home / 629,930.81-869,321.95-384,955.22

Finding the Fourth Proportional to 629,930.81, 869,321.95 and 384,955.22

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Solution

The fourth proportional to 629,930.81, 869,321.95 and 384,955.22 is: 531,248.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,930.81 : 869,321.95 = 384,955.22 : x
  2. Step 2: Convert to fraction form
    629,930.81/869,321.95 = 384,955.22/x
  3. Step 3: Cross multiply
    629,930.81x = 869,321.95 × 384,955.22
  4. Step 4: Simplify right side
    629,930.81x = 334,650,018,166.47
  5. Step 5: Solve for x
    x = 334,650,018,166.47/629,930.81
  6. Step 6: Final answer
    x = 531,248.85

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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.