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Finding the Fourth Proportional to 722,645.55, 997,390.35 and 416,919.33

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Solution

The fourth proportional to 722,645.55, 997,390.35 and 416,919.33 is: 575,429.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,645.55 : 997,390.35 = 416,919.33 : x
  2. Step 2: Convert to fraction form
    722,645.55/997,390.35 = 416,919.33/x
  3. Step 3: Cross multiply
    722,645.55x = 997,390.35 × 416,919.33
  4. Step 4: Simplify right side
    722,645.55x = 415,831,316,470.47
  5. Step 5: Solve for x
    x = 415,831,316,470.47/722,645.55
  6. Step 6: Final answer
    x = 575,429.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.