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Finding the Fourth Proportional to 665,854, 918,878.52 and 364,048

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Solution

The fourth proportional to 665,854, 918,878.52 and 364,048 is: 502,386.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,854 : 918,878.52 = 364,048 : x
  2. Step 2: Convert to fraction form
    665,854/918,878.52 = 364,048/x
  3. Step 3: Cross multiply
    665,854x = 918,878.52 × 364,048
  4. Step 4: Simplify right side
    665,854x = 334,515,887,448.96
  5. Step 5: Solve for x
    x = 334,515,887,448.96/665,854
  6. Step 6: Final answer
    x = 502,386.24

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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.