Home / 910,413.60-1,365,620.40-311,321.40

Finding the Fourth Proportional to 910,413.60, 1,365,620.40 and 311,321.40

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Solution

The fourth proportional to 910,413.60, 1,365,620.40 and 311,321.40 is: 466,982.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    910,413.60 : 1,365,620.40 = 311,321.40 : x
  2. Step 2: Convert to fraction form
    910,413.60/1,365,620.40 = 311,321.40/x
  3. Step 3: Cross multiply
    910,413.60x = 1,365,620.40 × 311,321.40
  4. Step 4: Simplify right side
    910,413.60x = 425,146,854,796.56
  5. Step 5: Solve for x
    x = 425,146,854,796.56/910,413.60
  6. Step 6: Final answer
    x = 466,982.10

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1.5x scale

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.