Home / 739,798,389.09-1,020,913,640.75-400,698,428.28

Finding the Fourth Proportional to 739,798,389.09, 1,020,913,640.75 and 400,698,428.28

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Solution

The fourth proportional to 739,798,389.09, 1,020,913,640.75 and 400,698,428.28 is: 552,959,424.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    739,798,389.09 : 1,020,913,640.75 = 400,698,428.28 : x
  2. Step 2: Convert to fraction form
    739,798,389.09/1,020,913,640.75 = 400,698,428.28/x
  3. Step 3: Cross multiply
    739,798,389.09x = 1,020,913,640.75 × 400,698,428.28
  4. Step 4: Simplify right side
    739,798,389.09x = 409,078,491,256,134,016
  5. Step 5: Solve for x
    x = 409,078,491,256,134,016/739,798,389.09
  6. Step 6: Final answer
    x = 552,959,424.20

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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.