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Finding the Fourth Proportional to 661,666.60, 993,018.30 and 306,724.60

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Solution

The fourth proportional to 661,666.60, 993,018.30 and 306,724.60 is: 460,327.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,666.60 : 993,018.30 = 306,724.60 : x
  2. Step 2: Convert to fraction form
    661,666.60/993,018.30 = 306,724.60/x
  3. Step 3: Cross multiply
    661,666.60x = 993,018.30 × 306,724.60
  4. Step 4: Simplify right side
    661,666.60x = 304,583,140,860.18
  5. Step 5: Solve for x
    x = 304,583,140,860.18/661,666.60
  6. Step 6: Final answer
    x = 460,327.21

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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.