Home / 399,690,462-551,403,939.60-267,574,018.80

Finding the Fourth Proportional to 399,690,462, 551,403,939.60 and 267,574,018.80

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Solution

The fourth proportional to 399,690,462, 551,403,939.60 and 267,574,018.80 is: 369,139,076.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,690,462 : 551,403,939.60 = 267,574,018.80 : x
  2. Step 2: Convert to fraction form
    399,690,462/551,403,939.60 = 267,574,018.80/x
  3. Step 3: Cross multiply
    399,690,462x = 551,403,939.60 × 267,574,018.80
  4. Step 4: Simplify right side
    399,690,462x = 147,541,368,100,924,480
  5. Step 5: Solve for x
    x = 147,541,368,100,924,480/399,690,462
  6. Step 6: Final answer
    x = 369,139,076.68

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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.