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Finding the Fourth Proportional to 868,912.40, 1,303,368.60 and 854,915.60

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Solution

The fourth proportional to 868,912.40, 1,303,368.60 and 854,915.60 is: 1,282,373.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    868,912.40 : 1,303,368.60 = 854,915.60 : x
  2. Step 2: Convert to fraction form
    868,912.40/1,303,368.60 = 854,915.60/x
  3. Step 3: Cross multiply
    868,912.40x = 1,303,368.60 × 854,915.60
  4. Step 4: Simplify right side
    868,912.40x = 1,114,270,148,690.16
  5. Step 5: Solve for x
    x = 1,114,270,148,690.16/868,912.40
  6. Step 6: Final answer
    x = 1,282,373.40

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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.