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Finding the Fourth Proportional to 999,070.72, 1,378,728.48 and 546,352

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Solution

The fourth proportional to 999,070.72, 1,378,728.48 and 546,352 is: 753,971.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    999,070.72 : 1,378,728.48 = 546,352 : x
  2. Step 2: Convert to fraction form
    999,070.72/1,378,728.48 = 546,352/x
  3. Step 3: Cross multiply
    999,070.72x = 1,378,728.48 × 546,352
  4. Step 4: Simplify right side
    999,070.72x = 753,271,062,504.96
  5. Step 5: Solve for x
    x = 753,271,062,504.96/999,070.72
  6. Step 6: Final answer
    x = 753,971.71

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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.