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Finding the Fourth Proportional to 443,896,178.80, 665,844,268.20 and 400,898,009.20

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Solution

The fourth proportional to 443,896,178.80, 665,844,268.20 and 400,898,009.20 is: 601,347,013.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,896,178.80 : 665,844,268.20 = 400,898,009.20 : x
  2. Step 2: Convert to fraction form
    443,896,178.80/665,844,268.20 = 400,898,009.20/x
  3. Step 3: Cross multiply
    443,896,178.80x = 665,844,268.20 × 400,898,009.20
  4. Step 4: Simplify right side
    443,896,178.80x = 266,935,641,558,610,880
  5. Step 5: Solve for x
    x = 266,935,641,558,610,880/443,896,178.80
  6. Step 6: Final answer
    x = 601,347,013.80

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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.