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Finding the Fourth Proportional to 478,814.40, 716,839.20 and 292,190.40

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Solution

The fourth proportional to 478,814.40, 716,839.20 and 292,190.40 is: 437,442.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,814.40 : 716,839.20 = 292,190.40 : x
  2. Step 2: Convert to fraction form
    478,814.40/716,839.20 = 292,190.40/x
  3. Step 3: Cross multiply
    478,814.40x = 716,839.20 × 292,190.40
  4. Step 4: Simplify right side
    478,814.40x = 209,453,532,583.68
  5. Step 5: Solve for x
    x = 209,453,532,583.68/478,814.40
  6. Step 6: Final answer
    x = 437,442.01

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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.