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Finding the Fourth Proportional to 492,415.52, 679,585.66 and 288,637.66

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Solution

The fourth proportional to 492,415.52, 679,585.66 and 288,637.66 is: 398,350.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,415.52 : 679,585.66 = 288,637.66 : x
  2. Step 2: Convert to fraction form
    492,415.52/679,585.66 = 288,637.66/x
  3. Step 3: Cross multiply
    492,415.52x = 679,585.66 × 288,637.66
  4. Step 4: Simplify right side
    492,415.52x = 196,154,014,671.96
  5. Step 5: Solve for x
    x = 196,154,014,671.96/492,415.52
  6. Step 6: Final answer
    x = 398,350.59

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1.5x scale

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.