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Finding the Fourth Proportional to 659,638.48, 987,962.64 and 516,592.12

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Solution

The fourth proportional to 659,638.48, 987,962.64 and 516,592.12 is: 773,717.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,638.48 : 987,962.64 = 516,592.12 : x
  2. Step 2: Convert to fraction form
    659,638.48/987,962.64 = 516,592.12/x
  3. Step 3: Cross multiply
    659,638.48x = 987,962.64 × 516,592.12
  4. Step 4: Simplify right side
    659,638.48x = 510,373,714,678.40
  5. Step 5: Solve for x
    x = 510,373,714,678.40/659,638.48
  6. Step 6: Final answer
    x = 773,717.32

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1.5x scale

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.