Home / 515,943.23-712,003.89-286,499.81

Finding the Fourth Proportional to 515,943.23, 712,003.89 and 286,499.81

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Solution

The fourth proportional to 515,943.23, 712,003.89 and 286,499.81 is: 395,370.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,943.23 : 712,003.89 = 286,499.81 : x
  2. Step 2: Convert to fraction form
    515,943.23/712,003.89 = 286,499.81/x
  3. Step 3: Cross multiply
    515,943.23x = 712,003.89 × 286,499.81
  4. Step 4: Simplify right side
    515,943.23x = 203,988,976,039.17
  5. Step 5: Solve for x
    x = 203,988,976,039.17/515,943.23
  6. Step 6: Final answer
    x = 395,370.98

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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.