Home / 645,903.82-890,842.35-419,622.22

Finding the Fourth Proportional to 645,903.82, 890,842.35 and 419,622.22

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Solution

The fourth proportional to 645,903.82, 890,842.35 and 419,622.22 is: 578,750.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,903.82 : 890,842.35 = 419,622.22 : x
  2. Step 2: Convert to fraction form
    645,903.82/890,842.35 = 419,622.22/x
  3. Step 3: Cross multiply
    645,903.82x = 890,842.35 × 419,622.22
  4. Step 4: Simplify right side
    645,903.82x = 373,817,244,577.02
  5. Step 5: Solve for x
    x = 373,817,244,577.02/645,903.82
  6. Step 6: Final answer
    x = 578,750.63

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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.