Home / 890,190.81-1,335,282.98-490,621.05

Finding the Fourth Proportional to 890,190.81, 1,335,282.98 and 490,621.05

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Solution

The fourth proportional to 890,190.81, 1,335,282.98 and 490,621.05 is: 735,929.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    890,190.81 : 1,335,282.98 = 490,621.05 : x
  2. Step 2: Convert to fraction form
    890,190.81/1,335,282.98 = 490,621.05/x
  3. Step 3: Cross multiply
    890,190.81x = 1,335,282.98 × 490,621.05
  4. Step 4: Simplify right side
    890,190.81x = 655,117,935,241.62
  5. Step 5: Solve for x
    x = 655,117,935,241.62/890,190.81
  6. Step 6: Final answer
    x = 735,929.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.