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Finding the Fourth Proportional to 515,073.60, 772,610.40 and 437,313.60

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Solution

The fourth proportional to 515,073.60, 772,610.40 and 437,313.60 is: 655,970.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,073.60 : 772,610.40 = 437,313.60 : x
  2. Step 2: Convert to fraction form
    515,073.60/772,610.40 = 437,313.60/x
  3. Step 3: Cross multiply
    515,073.60x = 772,610.40 × 437,313.60
  4. Step 4: Simplify right side
    515,073.60x = 337,873,035,421.44
  5. Step 5: Solve for x
    x = 337,873,035,421.44/515,073.60
  6. Step 6: Final answer
    x = 655,970.40

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Double scale
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Similar ratio
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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.