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Finding the Fourth Proportional to 613,583.45, 920,067.18 and 357,498.91

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Solution

The fourth proportional to 613,583.45, 920,067.18 and 357,498.91 is: 536,068.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,583.45 : 920,067.18 = 357,498.91 : x
  2. Step 2: Convert to fraction form
    613,583.45/920,067.18 = 357,498.91/x
  3. Step 3: Cross multiply
    613,583.45x = 920,067.18 × 357,498.91
  4. Step 4: Simplify right side
    613,583.45x = 328,923,013,976.77
  5. Step 5: Solve for x
    x = 328,923,013,976.77/613,583.45
  6. Step 6: Final answer
    x = 536,068.91

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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.