Home / 425,683,428,747.81-638,526,799,715.20-102,985,724,504.39

Finding the Fourth Proportional to 425,683,428,747.81, 638,526,799,715.20 and 102,985,724,504.39

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Solution

The fourth proportional to 425,683,428,747.81, 638,526,799,715.20 and 102,985,724,504.39 is: 154,478,987,536.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,683,428,747.81 : 638,526,799,715.20 = 102,985,724,504.39 : x
  2. Step 2: Convert to fraction form
    425,683,428,747.81/638,526,799,715.20 = 102,985,724,504.39/x
  3. Step 3: Cross multiply
    425,683,428,747.81x = 638,526,799,715.20 × 102,985,724,504.39
  4. Step 4: Simplify right side
    425,683,428,747.81x = 65,759,145,084,139,390,107,648
  5. Step 5: Solve for x
    x = 65,759,145,084,139,390,107,648/425,683,428,747.81
  6. Step 6: Final answer
    x = 154,478,987,536.76

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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.