Home / 907,840.50-1,361,366.88-308,640.72

Finding the Fourth Proportional to 907,840.50, 1,361,366.88 and 308,640.72

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Solution

The fourth proportional to 907,840.50, 1,361,366.88 and 308,640.72 is: 462,827.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    907,840.50 : 1,361,366.88 = 308,640.72 : x
  2. Step 2: Convert to fraction form
    907,840.50/1,361,366.88 = 308,640.72/x
  3. Step 3: Cross multiply
    907,840.50x = 1,361,366.88 × 308,640.72
  4. Step 4: Simplify right side
    907,840.50x = 420,173,254,027.35
  5. Step 5: Solve for x
    x = 420,173,254,027.35/907,840.50
  6. Step 6: Final answer
    x = 462,827.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.