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Finding the Fourth Proportional to 660,276.90, 990,415.35 and 615,662.10

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Solution

The fourth proportional to 660,276.90, 990,415.35 and 615,662.10 is: 923,493.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,276.90 : 990,415.35 = 615,662.10 : x
  2. Step 2: Convert to fraction form
    660,276.90/990,415.35 = 615,662.10/x
  3. Step 3: Cross multiply
    660,276.90x = 990,415.35 × 615,662.10
  4. Step 4: Simplify right side
    660,276.90x = 609,761,194,253.24
  5. Step 5: Solve for x
    x = 609,761,194,253.24/660,276.90
  6. Step 6: Final answer
    x = 923,493.15

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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.