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Finding the Fourth Proportional to 499,491.40, 749,237.10 and 286,040.20

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Solution

The fourth proportional to 499,491.40, 749,237.10 and 286,040.20 is: 429,060.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,491.40 : 749,237.10 = 286,040.20 : x
  2. Step 2: Convert to fraction form
    499,491.40/749,237.10 = 286,040.20/x
  3. Step 3: Cross multiply
    499,491.40x = 749,237.10 × 286,040.20
  4. Step 4: Simplify right side
    499,491.40x = 214,311,929,931.42
  5. Step 5: Solve for x
    x = 214,311,929,931.42/499,491.40
  6. Step 6: Final answer
    x = 429,060.30

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Similar ratio
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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.