Home / 1,225,368.72-1,690,993.80-688,824.72

Finding the Fourth Proportional to 1,225,368.72, 1,690,993.80 and 688,824.72

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Solution

The fourth proportional to 1,225,368.72, 1,690,993.80 and 688,824.72 is: 950,569.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,225,368.72 : 1,690,993.80 = 688,824.72 : x
  2. Step 2: Convert to fraction form
    1,225,368.72/1,690,993.80 = 688,824.72/x
  3. Step 3: Cross multiply
    1,225,368.72x = 1,690,993.80 × 688,824.72
  4. Step 4: Simplify right side
    1,225,368.72x = 1,164,798,330,806.74
  5. Step 5: Solve for x
    x = 1,164,798,330,806.74/1,225,368.72
  6. Step 6: Final answer
    x = 950,569.66

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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.