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Finding the Fourth Proportional to 630,917.91, 870,743.12 and 359,051.94

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Solution

The fourth proportional to 630,917.91, 870,743.12 and 359,051.94 is: 495,535.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,917.91 : 870,743.12 = 359,051.94 : x
  2. Step 2: Convert to fraction form
    630,917.91/870,743.12 = 359,051.94/x
  3. Step 3: Cross multiply
    630,917.91x = 870,743.12 × 359,051.94
  4. Step 4: Simplify right side
    630,917.91x = 312,642,004,682.39
  5. Step 5: Solve for x
    x = 312,642,004,682.39/630,917.91
  6. Step 6: Final answer
    x = 495,535.16

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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.