Home / 1,242,702.72-1,864,076.88-389,755.32

Finding the Fourth Proportional to 1,242,702.72, 1,864,076.88 and 389,755.32

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Solution

The fourth proportional to 1,242,702.72, 1,864,076.88 and 389,755.32 is: 584,640.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,242,702.72 : 1,864,076.88 = 389,755.32 : x
  2. Step 2: Convert to fraction form
    1,242,702.72/1,864,076.88 = 389,755.32/x
  3. Step 3: Cross multiply
    1,242,702.72x = 1,864,076.88 × 389,755.32
  4. Step 4: Simplify right side
    1,242,702.72x = 726,533,880,869.00
  5. Step 5: Solve for x
    x = 726,533,880,869.00/1,242,702.72
  6. Step 6: Final answer
    x = 584,640.13

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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.