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Finding the Fourth Proportional to 868,906.40, 1,303,359.60 and 854,909.60

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Solution

The fourth proportional to 868,906.40, 1,303,359.60 and 854,909.60 is: 1,282,364.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    868,906.40 : 1,303,359.60 = 854,909.60 : x
  2. Step 2: Convert to fraction form
    868,906.40/1,303,359.60 = 854,909.60/x
  3. Step 3: Cross multiply
    868,906.40x = 1,303,359.60 × 854,909.60
  4. Step 4: Simplify right side
    868,906.40x = 1,114,254,634,292.16
  5. Step 5: Solve for x
    x = 1,114,254,634,292.16/868,906.40
  6. Step 6: Final answer
    x = 1,282,364.40

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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.