Home / 816,999.90-1,225,413.45-256,004.70

Finding the Fourth Proportional to 816,999.90, 1,225,413.45 and 256,004.70

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Solution

The fourth proportional to 816,999.90, 1,225,413.45 and 256,004.70 is: 383,979.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    816,999.90 : 1,225,413.45 = 256,004.70 : x
  2. Step 2: Convert to fraction form
    816,999.90/1,225,413.45 = 256,004.70/x
  3. Step 3: Cross multiply
    816,999.90x = 1,225,413.45 × 256,004.70
  4. Step 4: Simplify right side
    816,999.90x = 313,711,602,643.22
  5. Step 5: Solve for x
    x = 313,711,602,643.22/816,999.90
  6. Step 6: Final answer
    x = 383,979.98

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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.