Home / 630,845.85-870,556.04-358,907.90

Finding the Fourth Proportional to 630,845.85, 870,556.04 and 358,907.90

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Solution

The fourth proportional to 630,845.85, 870,556.04 and 358,907.90 is: 495,286.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,845.85 : 870,556.04 = 358,907.90 : x
  2. Step 2: Convert to fraction form
    630,845.85/870,556.04 = 358,907.90/x
  3. Step 3: Cross multiply
    630,845.85x = 870,556.04 × 358,907.90
  4. Step 4: Simplify right side
    630,845.85x = 312,449,435,347.30
  5. Step 5: Solve for x
    x = 312,449,435,347.30/630,845.85
  6. Step 6: Final answer
    x = 495,286.50

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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.