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Finding the Fourth Proportional to 682,759.47, 942,207.48 and 380,953.47

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Solution

The fourth proportional to 682,759.47, 942,207.48 and 380,953.47 is: 525,715.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    682,759.47 : 942,207.48 = 380,953.47 : x
  2. Step 2: Convert to fraction form
    682,759.47/942,207.48 = 380,953.47/x
  3. Step 3: Cross multiply
    682,759.47x = 942,207.48 × 380,953.47
  4. Step 4: Simplify right side
    682,759.47x = 358,937,208,965.96
  5. Step 5: Solve for x
    x = 358,937,208,965.96/682,759.47
  6. Step 6: Final answer
    x = 525,715.46

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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.