Home / 642,546.02-886,702.87-352,155.35

Finding the Fourth Proportional to 642,546.02, 886,702.87 and 352,155.35

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Solution

The fourth proportional to 642,546.02, 886,702.87 and 352,155.35 is: 485,968.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,546.02 : 886,702.87 = 352,155.35 : x
  2. Step 2: Convert to fraction form
    642,546.02/886,702.87 = 352,155.35/x
  3. Step 3: Cross multiply
    642,546.02x = 886,702.87 × 352,155.35
  4. Step 4: Simplify right side
    642,546.02x = 312,257,159,530.86
  5. Step 5: Solve for x
    x = 312,257,159,530.86/642,546.02
  6. Step 6: Final answer
    x = 485,968.55

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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.