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Finding the Fourth Proportional to 985,652.10, 1,478,368.80 and 275,751.90

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Solution

The fourth proportional to 985,652.10, 1,478,368.80 and 275,751.90 is: 413,597.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    985,652.10 : 1,478,368.80 = 275,751.90 : x
  2. Step 2: Convert to fraction form
    985,652.10/1,478,368.80 = 275,751.90/x
  3. Step 3: Cross multiply
    985,652.10x = 1,478,368.80 × 275,751.90
  4. Step 4: Simplify right side
    985,652.10x = 407,663,005,500.72
  5. Step 5: Solve for x
    x = 407,663,005,500.72/985,652.10
  6. Step 6: Final answer
    x = 413,597.26

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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.