Home / 713,965.24-985,275.66-391,705.12

Finding the Fourth Proportional to 713,965.24, 985,275.66 and 391,705.12

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Solution

The fourth proportional to 713,965.24, 985,275.66 and 391,705.12 is: 540,555.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,965.24 : 985,275.66 = 391,705.12 : x
  2. Step 2: Convert to fraction form
    713,965.24/985,275.66 = 391,705.12/x
  3. Step 3: Cross multiply
    713,965.24x = 985,275.66 × 391,705.12
  4. Step 4: Simplify right side
    713,965.24x = 385,937,520,633.38
  5. Step 5: Solve for x
    x = 385,937,520,633.38/713,965.24
  6. Step 6: Final answer
    x = 540,555.06

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Double scale
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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.