Home / 712,467.32-983,208.04-390,179.66

Finding the Fourth Proportional to 712,467.32, 983,208.04 and 390,179.66

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Solution

The fourth proportional to 712,467.32, 983,208.04 and 390,179.66 is: 538,449.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,467.32 : 983,208.04 = 390,179.66 : x
  2. Step 2: Convert to fraction form
    712,467.32/983,208.04 = 390,179.66/x
  3. Step 3: Cross multiply
    712,467.32x = 983,208.04 × 390,179.66
  4. Step 4: Simplify right side
    712,467.32x = 383,627,772,864.98
  5. Step 5: Solve for x
    x = 383,627,772,864.98/712,467.32
  6. Step 6: Final answer
    x = 538,449.65

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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.