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Finding the Fourth Proportional to 516,063.60, 712,202.76 and 388,537.20

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Solution

The fourth proportional to 516,063.60, 712,202.76 and 388,537.20 is: 536,207.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    516,063.60 : 712,202.76 = 388,537.20 : x
  2. Step 2: Convert to fraction form
    516,063.60/712,202.76 = 388,537.20/x
  3. Step 3: Cross multiply
    516,063.60x = 712,202.76 × 388,537.20
  4. Step 4: Simplify right side
    516,063.60x = 276,717,266,202.67
  5. Step 5: Solve for x
    x = 276,717,266,202.67/516,063.60
  6. Step 6: Final answer
    x = 536,207.68

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1.5x scale

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.