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Finding the Fourth Proportional to 917,114.40, 1,375,671.60 and 286,027.20

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Solution

The fourth proportional to 917,114.40, 1,375,671.60 and 286,027.20 is: 429,040.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    917,114.40 : 1,375,671.60 = 286,027.20 : x
  2. Step 2: Convert to fraction form
    917,114.40/1,375,671.60 = 286,027.20/x
  3. Step 3: Cross multiply
    917,114.40x = 1,375,671.60 × 286,027.20
  4. Step 4: Simplify right side
    917,114.40x = 393,479,495,867.52
  5. Step 5: Solve for x
    x = 393,479,495,867.52/917,114.40
  6. Step 6: Final answer
    x = 429,040.80

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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.