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Finding the Fourth Proportional to 499,438.80, 749,158.20 and 496,328.40

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Solution

The fourth proportional to 499,438.80, 749,158.20 and 496,328.40 is: 744,492.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,438.80 : 749,158.20 = 496,328.40 : x
  2. Step 2: Convert to fraction form
    499,438.80/749,158.20 = 496,328.40/x
  3. Step 3: Cross multiply
    499,438.80x = 749,158.20 × 496,328.40
  4. Step 4: Simplify right side
    499,438.80x = 371,828,490,752.88
  5. Step 5: Solve for x
    x = 371,828,490,752.88/499,438.80
  6. Step 6: Final answer
    x = 744,492.60

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Double scale
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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.