Home / 645,196.68-890,346.06-358,695.90

Finding the Fourth Proportional to 645,196.68, 890,346.06 and 358,695.90

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Solution

The fourth proportional to 645,196.68, 890,346.06 and 358,695.90 is: 494,986.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,196.68 : 890,346.06 = 358,695.90 : x
  2. Step 2: Convert to fraction form
    645,196.68/890,346.06 = 358,695.90/x
  3. Step 3: Cross multiply
    645,196.68x = 890,346.06 × 358,695.90
  4. Step 4: Simplify right side
    645,196.68x = 319,363,481,303.15
  5. Step 5: Solve for x
    x = 319,363,481,303.15/645,196.68
  6. Step 6: Final answer
    x = 494,986.24

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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.