Home / 870,260.34-1,200,563.70-564,413.84

Finding the Fourth Proportional to 870,260.34, 1,200,563.70 and 564,413.84

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Solution

The fourth proportional to 870,260.34, 1,200,563.70 and 564,413.84 is: 778,634.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    870,260.34 : 1,200,563.70 = 564,413.84 : x
  2. Step 2: Convert to fraction form
    870,260.34/1,200,563.70 = 564,413.84/x
  3. Step 3: Cross multiply
    870,260.34x = 1,200,563.70 × 564,413.84
  4. Step 4: Simplify right side
    870,260.34x = 677,614,768,081.61
  5. Step 5: Solve for x
    x = 677,614,768,081.61/870,260.34
  6. Step 6: Final answer
    x = 778,634.55

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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.