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Finding the Fourth Proportional to 487,383.40, 731,075.10 and 443,837.80

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Solution

The fourth proportional to 487,383.40, 731,075.10 and 443,837.80 is: 665,756.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,383.40 : 731,075.10 = 443,837.80 : x
  2. Step 2: Convert to fraction form
    487,383.40/731,075.10 = 443,837.80/x
  3. Step 3: Cross multiply
    487,383.40x = 731,075.10 × 443,837.80
  4. Step 4: Simplify right side
    487,383.40x = 324,478,764,018.78
  5. Step 5: Solve for x
    x = 324,478,764,018.78/487,383.40
  6. Step 6: Final answer
    x = 665,756.70

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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.