Home / 840,123.71-1,260,185.83-209,037.53

Finding the Fourth Proportional to 840,123.71, 1,260,185.83 and 209,037.53

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Solution

The fourth proportional to 840,123.71, 1,260,185.83 and 209,037.53 is: 313,556.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    840,123.71 : 1,260,185.83 = 209,037.53 : x
  2. Step 2: Convert to fraction form
    840,123.71/1,260,185.83 = 209,037.53/x
  3. Step 3: Cross multiply
    840,123.71x = 1,260,185.83 × 209,037.53
  4. Step 4: Simplify right side
    840,123.71x = 263,426,126,943.27
  5. Step 5: Solve for x
    x = 263,426,126,943.27/840,123.71
  6. Step 6: Final answer
    x = 313,556.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.