Home / 645,114.60-890,312.01-358,661.34

Finding the Fourth Proportional to 645,114.60, 890,312.01 and 358,661.34

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Solution

The fourth proportional to 645,114.60, 890,312.01 and 358,661.34 is: 494,982.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,114.60 : 890,312.01 = 358,661.34 : x
  2. Step 2: Convert to fraction form
    645,114.60/890,312.01 = 358,661.34/x
  3. Step 3: Cross multiply
    645,114.60x = 890,312.01 × 358,661.34
  4. Step 4: Simplify right side
    645,114.60x = 319,320,498,524.69
  5. Step 5: Solve for x
    x = 319,320,498,524.69/645,114.60
  6. Step 6: Final answer
    x = 494,982.59

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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.