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Finding the Fourth Proportional to 630,991.96, 870,788.13 and 359,098.96

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Solution

The fourth proportional to 630,991.96, 870,788.13 and 359,098.96 is: 495,567.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,991.96 : 870,788.13 = 359,098.96 : x
  2. Step 2: Convert to fraction form
    630,991.96/870,788.13 = 359,098.96/x
  3. Step 3: Cross multiply
    630,991.96x = 870,788.13 × 359,098.96
  4. Step 4: Simplify right side
    630,991.96x = 312,699,111,863.35
  5. Step 5: Solve for x
    x = 312,699,111,863.35/630,991.96
  6. Step 6: Final answer
    x = 495,567.51

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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.