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Finding the Fourth Proportional to 520,653.12, 779,718.92 and 360,279.47

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Solution

The fourth proportional to 520,653.12, 779,718.92 and 360,279.47 is: 539,546.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,653.12 : 779,718.92 = 360,279.47 : x
  2. Step 2: Convert to fraction form
    520,653.12/779,718.92 = 360,279.47/x
  3. Step 3: Cross multiply
    520,653.12x = 779,718.92 × 360,279.47
  4. Step 4: Simplify right side
    520,653.12x = 280,916,713,546.58
  5. Step 5: Solve for x
    x = 280,916,713,546.58/520,653.12
  6. Step 6: Final answer
    x = 539,546.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.