Home / 1,689,853.32-2,331,982.36-915,466.40

Finding the Fourth Proportional to 1,689,853.32, 2,331,982.36 and 915,466.40

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Solution

The fourth proportional to 1,689,853.32, 2,331,982.36 and 915,466.40 is: 1,263,335.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,689,853.32 : 2,331,982.36 = 915,466.40 : x
  2. Step 2: Convert to fraction form
    1,689,853.32/2,331,982.36 = 915,466.40/x
  3. Step 3: Cross multiply
    1,689,853.32x = 2,331,982.36 × 915,466.40
  4. Step 4: Simplify right side
    1,689,853.32x = 2,134,851,495,972.70
  5. Step 5: Solve for x
    x = 2,134,851,495,972.70/1,689,853.32
  6. Step 6: Final answer
    x = 1,263,335.39

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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.