Home / 438,052,274.40-657,078,411.60-265,723,672.80

Finding the Fourth Proportional to 438,052,274.40, 657,078,411.60 and 265,723,672.80

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Solution

The fourth proportional to 438,052,274.40, 657,078,411.60 and 265,723,672.80 is: 398,585,509.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,052,274.40 : 657,078,411.60 = 265,723,672.80 : x
  2. Step 2: Convert to fraction form
    438,052,274.40/657,078,411.60 = 265,723,672.80/x
  3. Step 3: Cross multiply
    438,052,274.40x = 657,078,411.60 × 265,723,672.80
  4. Step 4: Simplify right side
    438,052,274.40x = 174,601,288,847,942,144
  5. Step 5: Solve for x
    x = 174,601,288,847,942,144/438,052,274.40
  6. Step 6: Final answer
    x = 398,585,509.20

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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.