Home / 912,608.12-1,259,259.32-525,348.72

Finding the Fourth Proportional to 912,608.12, 1,259,259.32 and 525,348.72

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Solution

The fourth proportional to 912,608.12, 1,259,259.32 and 525,348.72 is: 724,900.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    912,608.12 : 1,259,259.32 = 525,348.72 : x
  2. Step 2: Convert to fraction form
    912,608.12/1,259,259.32 = 525,348.72/x
  3. Step 3: Cross multiply
    912,608.12x = 1,259,259.32 × 525,348.72
  4. Step 4: Simplify right side
    912,608.12x = 661,550,269,283.33
  5. Step 5: Solve for x
    x = 661,550,269,283.33/912,608.12
  6. Step 6: Final answer
    x = 724,900.71

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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.