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Finding the Fourth Proportional to 630,579.75, 870,200.06 and 404,225.25

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Solution

The fourth proportional to 630,579.75, 870,200.06 and 404,225.25 is: 557,830.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,579.75 : 870,200.06 = 404,225.25 : x
  2. Step 2: Convert to fraction form
    630,579.75/870,200.06 = 404,225.25/x
  3. Step 3: Cross multiply
    630,579.75x = 870,200.06 × 404,225.25
  4. Step 4: Simplify right side
    630,579.75x = 351,756,834,782.39
  5. Step 5: Solve for x
    x = 351,756,834,782.39/630,579.75
  6. Step 6: Final answer
    x = 557,830.85

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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.