Home / 1,478,261.40-2,215,861.20-802,915.80

Finding the Fourth Proportional to 1,478,261.40, 2,215,861.20 and 802,915.80

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Solution

The fourth proportional to 1,478,261.40, 2,215,861.20 and 802,915.80 is: 1,203,542.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,478,261.40 : 2,215,861.20 = 802,915.80 : x
  2. Step 2: Convert to fraction form
    1,478,261.40/2,215,861.20 = 802,915.80/x
  3. Step 3: Cross multiply
    1,478,261.40x = 2,215,861.20 × 802,915.80
  4. Step 4: Simplify right side
    1,478,261.40x = 1,779,149,968,086.96
  5. Step 5: Solve for x
    x = 1,779,149,968,086.96/1,478,261.40
  6. Step 6: Final answer
    x = 1,203,542.19

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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.