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Finding the Fourth Proportional to 748,966,359.78, 1,033,651,374.21 and 431,437,579.38

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Solution

The fourth proportional to 748,966,359.78, 1,033,651,374.21 and 431,437,579.38 is: 595,428,674.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    748,966,359.78 : 1,033,651,374.21 = 431,437,579.38 : x
  2. Step 2: Convert to fraction form
    748,966,359.78/1,033,651,374.21 = 431,437,579.38/x
  3. Step 3: Cross multiply
    748,966,359.78x = 1,033,651,374.21 × 431,437,579.38
  4. Step 4: Simplify right side
    748,966,359.78x = 445,956,046,811,972,992
  5. Step 5: Solve for x
    x = 445,956,046,811,972,992/748,966,359.78
  6. Step 6: Final answer
    x = 595,428,674.45

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1.5x scale

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.