Home / 890,389.80-1,334,994.30-491,221.80

Finding the Fourth Proportional to 890,389.80, 1,334,994.30 and 491,221.80

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Solution

The fourth proportional to 890,389.80, 1,334,994.30 and 491,221.80 is: 736,506.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    890,389.80 : 1,334,994.30 = 491,221.80 : x
  2. Step 2: Convert to fraction form
    890,389.80/1,334,994.30 = 491,221.80/x
  3. Step 3: Cross multiply
    890,389.80x = 1,334,994.30 × 491,221.80
  4. Step 4: Simplify right side
    890,389.80x = 655,778,303,035.74
  5. Step 5: Solve for x
    x = 655,778,303,035.74/890,389.80
  6. Step 6: Final answer
    x = 736,506.98

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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.