Home / 665,970.77-919,159.79-375,671.43

Finding the Fourth Proportional to 665,970.77, 919,159.79 and 375,671.43

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Solution

The fourth proportional to 665,970.77, 919,159.79 and 375,671.43 is: 518,494.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,970.77 : 919,159.79 = 375,671.43 : x
  2. Step 2: Convert to fraction form
    665,970.77/919,159.79 = 375,671.43/x
  3. Step 3: Cross multiply
    665,970.77x = 919,159.79 × 375,671.43
  4. Step 4: Simplify right side
    665,970.77x = 345,302,070,829.44
  5. Step 5: Solve for x
    x = 345,302,070,829.44/665,970.77
  6. Step 6: Final answer
    x = 518,494.33

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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.