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Finding the Fourth Proportional to 615,869.80, 860,118.20 and 615,869.80

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Solution

The fourth proportional to 615,869.80, 860,118.20 and 615,869.80 is: 860,118.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,869.80 : 860,118.20 = 615,869.80 : x
  2. Step 2: Convert to fraction form
    615,869.80/860,118.20 = 615,869.80/x
  3. Step 3: Cross multiply
    615,869.80x = 860,118.20 × 615,869.80
  4. Step 4: Simplify right side
    615,869.80x = 529,720,823,810.36
  5. Step 5: Solve for x
    x = 529,720,823,810.36/615,869.80
  6. Step 6: Final answer
    x = 860,118.20

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.