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Finding the Fourth Proportional to 663,652.31, 915,727 and 373,188.64

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Solution

The fourth proportional to 663,652.31, 915,727 and 373,188.64 is: 514,936.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,652.31 : 915,727 = 373,188.64 : x
  2. Step 2: Convert to fraction form
    663,652.31/915,727 = 373,188.64/x
  3. Step 3: Cross multiply
    663,652.31x = 915,727 × 373,188.64
  4. Step 4: Simplify right side
    663,652.31x = 341,738,913,741.28
  5. Step 5: Solve for x
    x = 341,738,913,741.28/663,652.31
  6. Step 6: Final answer
    x = 514,936.67

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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.