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Finding the Fourth Proportional to 522,855.30, 783,116.55 and 429,543.30

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Solution

The fourth proportional to 522,855.30, 783,116.55 and 429,543.30 is: 643,356.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,855.30 : 783,116.55 = 429,543.30 : x
  2. Step 2: Convert to fraction form
    522,855.30/783,116.55 = 429,543.30/x
  3. Step 3: Cross multiply
    522,855.30x = 783,116.55 × 429,543.30
  4. Step 4: Simplify right side
    522,855.30x = 336,382,467,171.62
  5. Step 5: Solve for x
    x = 336,382,467,171.62/522,855.30
  6. Step 6: Final answer
    x = 643,356.71

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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.