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Finding the Fourth Proportional to 860,115, 1,186,989.15 and 472,959.88

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Solution

The fourth proportional to 860,115, 1,186,989.15 and 472,959.88 is: 652,701.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    860,115 : 1,186,989.15 = 472,959.88 : x
  2. Step 2: Convert to fraction form
    860,115/1,186,989.15 = 472,959.88/x
  3. Step 3: Cross multiply
    860,115x = 1,186,989.15 × 472,959.88
  4. Step 4: Simplify right side
    860,115x = 561,398,245,945.30
  5. Step 5: Solve for x
    x = 561,398,245,945.30/860,115
  6. Step 6: Final answer
    x = 652,701.38

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1.5x scale

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.