Home / 399,690,459-551,403,935.46-267,574,015.80

Finding the Fourth Proportional to 399,690,459, 551,403,935.46 and 267,574,015.80

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Solution

The fourth proportional to 399,690,459, 551,403,935.46 and 267,574,015.80 is: 369,139,072.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,690,459 : 551,403,935.46 = 267,574,015.80 : x
  2. Step 2: Convert to fraction form
    399,690,459/551,403,935.46 = 267,574,015.80/x
  3. Step 3: Cross multiply
    399,690,459x = 551,403,935.46 × 267,574,015.80
  4. Step 4: Simplify right side
    399,690,459x = 147,541,365,338,956,224
  5. Step 5: Solve for x
    x = 147,541,365,338,956,224/399,690,459
  6. Step 6: Final answer
    x = 369,139,072.54

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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.