Home / 1,222,877.50-1,687,570.95-686,333.50

Finding the Fourth Proportional to 1,222,877.50, 1,687,570.95 and 686,333.50

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Solution

The fourth proportional to 1,222,877.50, 1,687,570.95 and 686,333.50 is: 947,140.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,222,877.50 : 1,687,570.95 = 686,333.50 : x
  2. Step 2: Convert to fraction form
    1,222,877.50/1,687,570.95 = 686,333.50/x
  3. Step 3: Cross multiply
    1,222,877.50x = 1,687,570.95 × 686,333.50
  4. Step 4: Simplify right side
    1,222,877.50x = 1,158,236,476,611.83
  5. Step 5: Solve for x
    x = 1,158,236,476,611.83/1,222,877.50
  6. Step 6: Final answer
    x = 947,140.23

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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.