Home / 648,619,122.90-974,480,820.38-415,905,773

Finding the Fourth Proportional to 648,619,122.90, 974,480,820.38 and 415,905,773

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Solution

The fourth proportional to 648,619,122.90, 974,480,820.38 and 415,905,773 is: 624,853,915.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,619,122.90 : 974,480,820.38 = 415,905,773 : x
  2. Step 2: Convert to fraction form
    648,619,122.90/974,480,820.38 = 415,905,773/x
  3. Step 3: Cross multiply
    648,619,122.90x = 974,480,820.38 × 415,905,773
  4. Step 4: Simplify right side
    648,619,122.90x = 405,292,198,873,818,048
  5. Step 5: Solve for x
    x = 405,292,198,873,818,048/648,619,122.90
  6. Step 6: Final answer
    x = 624,853,915.90

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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.