Home / 1,123,139.40-1,685,467.13-439,941.51

Finding the Fourth Proportional to 1,123,139.40, 1,685,467.13 and 439,941.51

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Solution

The fourth proportional to 1,123,139.40, 1,685,467.13 and 439,941.51 is: 660,209.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,123,139.40 : 1,685,467.13 = 439,941.51 : x
  2. Step 2: Convert to fraction form
    1,123,139.40/1,685,467.13 = 439,941.51/x
  3. Step 3: Cross multiply
    1,123,139.40x = 1,685,467.13 × 439,941.51
  4. Step 4: Simplify right side
    1,123,139.40x = 741,506,955,327.42
  5. Step 5: Solve for x
    x = 741,506,955,327.42/1,123,139.40
  6. Step 6: Final answer
    x = 660,209.19

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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.