Home / 858,419.60-1,287,629.40-503,603.60

Finding the Fourth Proportional to 858,419.60, 1,287,629.40 and 503,603.60

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Solution

The fourth proportional to 858,419.60, 1,287,629.40 and 503,603.60 is: 755,405.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,419.60 : 1,287,629.40 = 503,603.60 : x
  2. Step 2: Convert to fraction form
    858,419.60/1,287,629.40 = 503,603.60/x
  3. Step 3: Cross multiply
    858,419.60x = 1,287,629.40 × 503,603.60
  4. Step 4: Simplify right side
    858,419.60x = 648,454,801,305.84
  5. Step 5: Solve for x
    x = 648,454,801,305.84/858,419.60
  6. Step 6: Final answer
    x = 755,405.40

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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.