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Finding the Fourth Proportional to 660,521.80, 990,126.60 and 304,915.60

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Solution

The fourth proportional to 660,521.80, 990,126.60 and 304,915.60 is: 457,070.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,521.80 : 990,126.60 = 304,915.60 : x
  2. Step 2: Convert to fraction form
    660,521.80/990,126.60 = 304,915.60/x
  3. Step 3: Cross multiply
    660,521.80x = 990,126.60 × 304,915.60
  4. Step 4: Simplify right side
    660,521.80x = 301,905,046,314.96
  5. Step 5: Solve for x
    x = 301,905,046,314.96/660,521.80
  6. Step 6: Final answer
    x = 457,070.53

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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.