Home / 645,129.64-890,228.46-358,632.28

Finding the Fourth Proportional to 645,129.64, 890,228.46 and 358,632.28

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Solution

The fourth proportional to 645,129.64, 890,228.46 and 358,632.28 is: 494,884.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,129.64 : 890,228.46 = 358,632.28 : x
  2. Step 2: Convert to fraction form
    645,129.64/890,228.46 = 358,632.28/x
  3. Step 3: Cross multiply
    645,129.64x = 890,228.46 × 358,632.28
  4. Step 4: Simplify right side
    645,129.64x = 319,264,662,330.69
  5. Step 5: Solve for x
    x = 319,264,662,330.69/645,129.64
  6. Step 6: Final answer
    x = 494,884.50

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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.