Home / 890,393.80-1,335,000.30-491,225.80

Finding the Fourth Proportional to 890,393.80, 1,335,000.30 and 491,225.80

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Solution

The fourth proportional to 890,393.80, 1,335,000.30 and 491,225.80 is: 736,512.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    890,393.80 : 1,335,000.30 = 491,225.80 : x
  2. Step 2: Convert to fraction form
    890,393.80/1,335,000.30 = 491,225.80/x
  3. Step 3: Cross multiply
    890,393.80x = 1,335,000.30 × 491,225.80
  4. Step 4: Simplify right side
    890,393.80x = 655,786,590,367.74
  5. Step 5: Solve for x
    x = 655,786,590,367.74/890,393.80
  6. Step 6: Final answer
    x = 736,512.98

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Double scale
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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.