Home / 663,622,649.02-913,342,085.04-487,131,092.92

Finding the Fourth Proportional to 663,622,649.02, 913,342,085.04 and 487,131,092.92

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Solution

The fourth proportional to 663,622,649.02, 913,342,085.04 and 487,131,092.92 is: 670,437,226.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,622,649.02 : 913,342,085.04 = 487,131,092.92 : x
  2. Step 2: Convert to fraction form
    663,622,649.02/913,342,085.04 = 487,131,092.92/x
  3. Step 3: Cross multiply
    663,622,649.02x = 913,342,085.04 × 487,131,092.92
  4. Step 4: Simplify right side
    663,622,649.02x = 444,917,328,095,366,784
  5. Step 5: Solve for x
    x = 444,917,328,095,366,784/663,622,649.02
  6. Step 6: Final answer
    x = 670,437,226.26

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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.