Home / 713,827.15-985,109.03-391,550.83

Finding the Fourth Proportional to 713,827.15, 985,109.03 and 391,550.83

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Solution

The fourth proportional to 713,827.15, 985,109.03 and 391,550.83 is: 540,355.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,827.15 : 985,109.03 = 391,550.83 : x
  2. Step 2: Convert to fraction form
    713,827.15/985,109.03 = 391,550.83/x
  3. Step 3: Cross multiply
    713,827.15x = 985,109.03 × 391,550.83
  4. Step 4: Simplify right side
    713,827.15x = 385,720,258,337.00
  5. Step 5: Solve for x
    x = 385,720,258,337.00/713,827.15
  6. Step 6: Final answer
    x = 540,355.26

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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.