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Finding the Fourth Proportional to 630,647.94, 870,314.52 and 358,708.84

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Solution

The fourth proportional to 630,647.94, 870,314.52 and 358,708.84 is: 495,029.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,647.94 : 870,314.52 = 358,708.84 : x
  2. Step 2: Convert to fraction form
    630,647.94/870,314.52 = 358,708.84/x
  3. Step 3: Cross multiply
    630,647.94x = 870,314.52 × 358,708.84
  4. Step 4: Simplify right side
    630,647.94x = 312,189,511,904.36
  5. Step 5: Solve for x
    x = 312,189,511,904.36/630,647.94
  6. Step 6: Final answer
    x = 495,029.78

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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.