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Finding the Fourth Proportional to 1,008,984,670.47, 1,512,750,637.26 and 620,003,844.45

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Solution

The fourth proportional to 1,008,984,670.47, 1,512,750,637.26 and 620,003,844.45 is: 929,559,425.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,008,984,670.47 : 1,512,750,637.26 = 620,003,844.45 : x
  2. Step 2: Convert to fraction form
    1,008,984,670.47/1,512,750,637.26 = 620,003,844.45/x
  3. Step 3: Cross multiply
    1,008,984,670.47x = 1,512,750,637.26 × 620,003,844.45
  4. Step 4: Simplify right side
    1,008,984,670.47x = 937,911,210,795,387,520
  5. Step 5: Solve for x
    x = 937,911,210,795,387,520/1,008,984,670.47
  6. Step 6: Final answer
    x = 929,559,425.67

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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.