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Finding the Fourth Proportional to 651,617.70, 977,426.55 and 385,241.10

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Solution

The fourth proportional to 651,617.70, 977,426.55 and 385,241.10 is: 577,861.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    651,617.70 : 977,426.55 = 385,241.10 : x
  2. Step 2: Convert to fraction form
    651,617.70/977,426.55 = 385,241.10/x
  3. Step 3: Cross multiply
    651,617.70x = 977,426.55 × 385,241.10
  4. Step 4: Simplify right side
    651,617.70x = 376,544,879,291.21
  5. Step 5: Solve for x
    x = 376,544,879,291.21/651,617.70
  6. Step 6: Final answer
    x = 577,861.65

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Half scale
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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.