Home / 438,193,152,008.80-657,289,728,013.20-408,588,912,239.20

Finding the Fourth Proportional to 438,193,152,008.80, 657,289,728,013.20 and 408,588,912,239.20

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Solution

The fourth proportional to 438,193,152,008.80, 657,289,728,013.20 and 408,588,912,239.20 is: 612,883,368,358.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,193,152,008.80 : 657,289,728,013.20 = 408,588,912,239.20 : x
  2. Step 2: Convert to fraction form
    438,193,152,008.80/657,289,728,013.20 = 408,588,912,239.20/x
  3. Step 3: Cross multiply
    438,193,152,008.80x = 657,289,728,013.20 × 408,588,912,239.20
  4. Step 4: Simplify right side
    438,193,152,008.80x = 268,561,294,994,913,007,501,312
  5. Step 5: Solve for x
    x = 268,561,294,994,913,007,501,312/438,193,152,008.80
  6. Step 6: Final answer
    x = 612,883,368,358.80

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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.