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Finding the Fourth Proportional to 575,858.70, 863,788.05 and 386,901.90

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Solution

The fourth proportional to 575,858.70, 863,788.05 and 386,901.90 is: 580,352.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    575,858.70 : 863,788.05 = 386,901.90 : x
  2. Step 2: Convert to fraction form
    575,858.70/863,788.05 = 386,901.90/x
  3. Step 3: Cross multiply
    575,858.70x = 863,788.05 × 386,901.90
  4. Step 4: Simplify right side
    575,858.70x = 334,201,237,742.30
  5. Step 5: Solve for x
    x = 334,201,237,742.30/575,858.70
  6. Step 6: Final answer
    x = 580,352.85

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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.