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Finding the Fourth Proportional to 630,583.20, 870,204.80 and 449,610.40

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Solution

The fourth proportional to 630,583.20, 870,204.80 and 449,610.40 is: 620,462.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,583.20 : 870,204.80 = 449,610.40 : x
  2. Step 2: Convert to fraction form
    630,583.20/870,204.80 = 449,610.40/x
  3. Step 3: Cross multiply
    630,583.20x = 870,204.80 × 449,610.40
  4. Step 4: Simplify right side
    630,583.20x = 391,253,128,209.92
  5. Step 5: Solve for x
    x = 391,253,128,209.92/630,583.20
  6. Step 6: Final answer
    x = 620,462.34

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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.