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Finding the Fourth Proportional to 909,165.60, 1,366,372.80 and 893,419.20

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Solution

The fourth proportional to 909,165.60, 1,366,372.80 and 893,419.20 is: 1,342,707.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    909,165.60 : 1,366,372.80 = 893,419.20 : x
  2. Step 2: Convert to fraction form
    909,165.60/1,366,372.80 = 893,419.20/x
  3. Step 3: Cross multiply
    909,165.60x = 1,366,372.80 × 893,419.20
  4. Step 4: Simplify right side
    909,165.60x = 1,220,743,693,877.76
  5. Step 5: Solve for x
    x = 1,220,743,693,877.76/909,165.60
  6. Step 6: Final answer
    x = 1,342,707.75

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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.