Home / 890,413.20-1,230,399.72-648,275.52

Finding the Fourth Proportional to 890,413.20, 1,230,399.72 and 648,275.52

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Solution

The fourth proportional to 890,413.20, 1,230,399.72 and 648,275.52 is: 895,806.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    890,413.20 : 1,230,399.72 = 648,275.52 : x
  2. Step 2: Convert to fraction form
    890,413.20/1,230,399.72 = 648,275.52/x
  3. Step 3: Cross multiply
    890,413.20x = 1,230,399.72 × 648,275.52
  4. Step 4: Simplify right side
    890,413.20x = 797,638,018,290.85
  5. Step 5: Solve for x
    x = 797,638,018,290.85/890,413.20
  6. Step 6: Final answer
    x = 895,806.60

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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.