Home / 739,798,390.59-1,020,913,642.82-400,698,429.78

Finding the Fourth Proportional to 739,798,390.59, 1,020,913,642.82 and 400,698,429.78

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Solution

The fourth proportional to 739,798,390.59, 1,020,913,642.82 and 400,698,429.78 is: 552,959,426.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    739,798,390.59 : 1,020,913,642.82 = 400,698,429.78 : x
  2. Step 2: Convert to fraction form
    739,798,390.59/1,020,913,642.82 = 400,698,429.78/x
  3. Step 3: Cross multiply
    739,798,390.59x = 1,020,913,642.82 × 400,698,429.78
  4. Step 4: Simplify right side
    739,798,390.59x = 409,078,493,616,950,272
  5. Step 5: Solve for x
    x = 409,078,493,616,950,272/739,798,390.59
  6. Step 6: Final answer
    x = 552,959,426.27

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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.