Home / 438,048,680.40-657,073,020.60-265,720,078.80

Finding the Fourth Proportional to 438,048,680.40, 657,073,020.60 and 265,720,078.80

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Solution

The fourth proportional to 438,048,680.40, 657,073,020.60 and 265,720,078.80 is: 398,580,118.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,048,680.40 : 657,073,020.60 = 265,720,078.80 : x
  2. Step 2: Convert to fraction form
    438,048,680.40/657,073,020.60 = 265,720,078.80/x
  3. Step 3: Cross multiply
    438,048,680.40x = 657,073,020.60 × 265,720,078.80
  4. Step 4: Simplify right side
    438,048,680.40x = 174,597,494,811,186,048
  5. Step 5: Solve for x
    x = 174,597,494,811,186,048/438,048,680.40
  6. Step 6: Final answer
    x = 398,580,118.20

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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.