Home / 385,331.40-577,997.10-243,613.80

Finding the Fourth Proportional to 385,331.40, 577,997.10 and 243,613.80

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Solution

The fourth proportional to 385,331.40, 577,997.10 and 243,613.80 is: 365,420.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,331.40 : 577,997.10 = 243,613.80 : x
  2. Step 2: Convert to fraction form
    385,331.40/577,997.10 = 243,613.80/x
  3. Step 3: Cross multiply
    385,331.40x = 577,997.10 × 243,613.80
  4. Step 4: Simplify right side
    385,331.40x = 140,808,069,919.98
  5. Step 5: Solve for x
    x = 140,808,069,919.98/385,331.40
  6. Step 6: Final answer
    x = 365,420.70

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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.