Home / 915,784.16-1,373,413.48-308,506.55

Finding the Fourth Proportional to 915,784.16, 1,373,413.48 and 308,506.55

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Solution

The fourth proportional to 915,784.16, 1,373,413.48 and 308,506.55 is: 462,671.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    915,784.16 : 1,373,413.48 = 308,506.55 : x
  2. Step 2: Convert to fraction form
    915,784.16/1,373,413.48 = 308,506.55/x
  3. Step 3: Cross multiply
    915,784.16x = 1,373,413.48 × 308,506.55
  4. Step 4: Simplify right side
    915,784.16x = 423,707,046,799.96
  5. Step 5: Solve for x
    x = 423,707,046,799.96/915,784.16
  6. Step 6: Final answer
    x = 462,671.30

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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.