Home / 540,481,861,173.20-745,815,669,325.80-320,712,678,273.35

Finding the Fourth Proportional to 540,481,861,173.20, 745,815,669,325.80 and 320,712,678,273.35

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Solution

The fourth proportional to 540,481,861,173.20, 745,815,669,325.80 and 320,712,678,273.35 is: 442,554,242,779.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    540,481,861,173.20 : 745,815,669,325.80 = 320,712,678,273.35 : x
  2. Step 2: Convert to fraction form
    540,481,861,173.20/745,815,669,325.80 = 320,712,678,273.35/x
  3. Step 3: Cross multiply
    540,481,861,173.20x = 745,815,669,325.80 × 320,712,678,273.35
  4. Step 4: Simplify right side
    540,481,861,173.20x = 239,192,540,807,708,478,013,440
  5. Step 5: Solve for x
    x = 239,192,540,807,708,478,013,440/540,481,861,173.20
  6. Step 6: Final answer
    x = 442,554,242,779.77

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.