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Finding the Fourth Proportional to 583,415.73, 805,113.72 and 315,143.73

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Solution

The fourth proportional to 583,415.73, 805,113.72 and 315,143.73 is: 434,898.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    583,415.73 : 805,113.72 = 315,143.73 : x
  2. Step 2: Convert to fraction form
    583,415.73/805,113.72 = 315,143.73/x
  3. Step 3: Cross multiply
    583,415.73x = 805,113.72 × 315,143.73
  4. Step 4: Simplify right side
    583,415.73x = 253,726,540,794.98
  5. Step 5: Solve for x
    x = 253,726,540,794.98/583,415.73
  6. Step 6: Final answer
    x = 434,898.35

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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.