Home / 1,149,437.40-1,586,272.82-640,139.77

Finding the Fourth Proportional to 1,149,437.40, 1,586,272.82 and 640,139.77

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Solution

The fourth proportional to 1,149,437.40, 1,586,272.82 and 640,139.77 is: 883,420.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,149,437.40 : 1,586,272.82 = 640,139.77 : x
  2. Step 2: Convert to fraction form
    1,149,437.40/1,586,272.82 = 640,139.77/x
  3. Step 3: Cross multiply
    1,149,437.40x = 1,586,272.82 × 640,139.77
  4. Step 4: Simplify right side
    1,149,437.40x = 1,015,436,316,934.19
  5. Step 5: Solve for x
    x = 1,015,436,316,934.19/1,149,437.40
  6. Step 6: Final answer
    x = 883,420.29

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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.