Home / 872,360.21-1,203,679.13-509,713.93

Finding the Fourth Proportional to 872,360.21, 1,203,679.13 and 509,713.93

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Solution

The fourth proportional to 872,360.21, 1,203,679.13 and 509,713.93 is: 703,301.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    872,360.21 : 1,203,679.13 = 509,713.93 : x
  2. Step 2: Convert to fraction form
    872,360.21/1,203,679.13 = 509,713.93/x
  3. Step 3: Cross multiply
    872,360.21x = 1,203,679.13 × 509,713.93
  4. Step 4: Simplify right side
    872,360.21x = 613,532,021,085.57
  5. Step 5: Solve for x
    x = 613,532,021,085.57/872,360.21
  6. Step 6: Final answer
    x = 703,301.25

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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.