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Finding the Fourth Proportional to 677,679.12, 935,309.16 and 375,970.32

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Solution

The fourth proportional to 677,679.12, 935,309.16 and 375,970.32 is: 518,901.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    677,679.12 : 935,309.16 = 375,970.32 : x
  2. Step 2: Convert to fraction form
    677,679.12/935,309.16 = 375,970.32/x
  3. Step 3: Cross multiply
    677,679.12x = 935,309.16 × 375,970.32
  4. Step 4: Simplify right side
    677,679.12x = 351,648,484,184.13
  5. Step 5: Solve for x
    x = 351,648,484,184.13/677,679.12
  6. Step 6: Final answer
    x = 518,901.16

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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.