Home / 438,048,608.40-657,072,912.60-265,720,006.80

Finding the Fourth Proportional to 438,048,608.40, 657,072,912.60 and 265,720,006.80

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Solution

The fourth proportional to 438,048,608.40, 657,072,912.60 and 265,720,006.80 is: 398,580,010.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,048,608.40 : 657,072,912.60 = 265,720,006.80 : x
  2. Step 2: Convert to fraction form
    438,048,608.40/657,072,912.60 = 265,720,006.80/x
  3. Step 3: Cross multiply
    438,048,608.40x = 657,072,912.60 × 265,720,006.80
  4. Step 4: Simplify right side
    438,048,608.40x = 174,597,418,804,167,808
  5. Step 5: Solve for x
    x = 174,597,418,804,167,808/438,048,608.40
  6. Step 6: Final answer
    x = 398,580,010.20

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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.