Home / 629,921.49-869,365.45-358,030.25

Finding the Fourth Proportional to 629,921.49, 869,365.45 and 358,030.25

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Solution

The fourth proportional to 629,921.49, 869,365.45 and 358,030.25 is: 494,123.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,921.49 : 869,365.45 = 358,030.25 : x
  2. Step 2: Convert to fraction form
    629,921.49/869,365.45 = 358,030.25/x
  3. Step 3: Cross multiply
    629,921.49x = 869,365.45 × 358,030.25
  4. Step 4: Simplify right side
    629,921.49x = 311,259,132,697.12
  5. Step 5: Solve for x
    x = 311,259,132,697.12/629,921.49
  6. Step 6: Final answer
    x = 494,123.69

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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.