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Finding the Fourth Proportional to 554,385.90, 831,578.85 and 498,289.35

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Solution

The fourth proportional to 554,385.90, 831,578.85 and 498,289.35 is: 747,434.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,385.90 : 831,578.85 = 498,289.35 : x
  2. Step 2: Convert to fraction form
    554,385.90/831,578.85 = 498,289.35/x
  3. Step 3: Cross multiply
    554,385.90x = 831,578.85 × 498,289.35
  4. Step 4: Simplify right side
    554,385.90x = 414,366,884,640.25
  5. Step 5: Solve for x
    x = 414,366,884,640.25/554,385.90
  6. Step 6: Final answer
    x = 747,434.03

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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.