Home / 648,619,121.90-974,480,818.88-415,905,772

Finding the Fourth Proportional to 648,619,121.90, 974,480,818.88 and 415,905,772

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Solution

The fourth proportional to 648,619,121.90, 974,480,818.88 and 415,905,772 is: 624,853,914.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,619,121.90 : 974,480,818.88 = 415,905,772 : x
  2. Step 2: Convert to fraction form
    648,619,121.90/974,480,818.88 = 415,905,772/x
  3. Step 3: Cross multiply
    648,619,121.90x = 974,480,818.88 × 415,905,772
  4. Step 4: Simplify right side
    648,619,121.90x = 405,292,197,275,478,592
  5. Step 5: Solve for x
    x = 405,292,197,275,478,592/648,619,121.90
  6. Step 6: Final answer
    x = 624,853,914.40

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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.