Home / 713,905.86-985,184.19-391,608.48

Finding the Fourth Proportional to 713,905.86, 985,184.19 and 391,608.48

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Solution

The fourth proportional to 713,905.86, 985,184.19 and 391,608.48 is: 540,416.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,905.86 : 985,184.19 = 391,608.48 : x
  2. Step 2: Convert to fraction form
    713,905.86/985,184.19 = 391,608.48/x
  3. Step 3: Cross multiply
    713,905.86x = 985,184.19 × 391,608.48
  4. Step 4: Simplify right side
    713,905.86x = 385,806,483,165.93
  5. Step 5: Solve for x
    x = 385,806,483,165.93/713,905.86
  6. Step 6: Final answer
    x = 540,416.47

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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.