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Finding the Fourth Proportional to 660,657.36, 990,985.68 and 187,346.64

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Solution

The fourth proportional to 660,657.36, 990,985.68 and 187,346.64 is: 281,019.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,657.36 : 990,985.68 = 187,346.64 : x
  2. Step 2: Convert to fraction form
    660,657.36/990,985.68 = 187,346.64/x
  3. Step 3: Cross multiply
    660,657.36x = 990,985.68 × 187,346.64
  4. Step 4: Simplify right side
    660,657.36x = 185,657,837,436.12
  5. Step 5: Solve for x
    x = 185,657,837,436.12/660,657.36
  6. Step 6: Final answer
    x = 281,019.86

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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.