Home / 645,327.96-890,574.20-354,951.81

Finding the Fourth Proportional to 645,327.96, 890,574.20 and 354,951.81

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Solution

The fourth proportional to 645,327.96, 890,574.20 and 354,951.81 is: 489,845.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,327.96 : 890,574.20 = 354,951.81 : x
  2. Step 2: Convert to fraction form
    645,327.96/890,574.20 = 354,951.81/x
  3. Step 3: Cross multiply
    645,327.96x = 890,574.20 × 354,951.81
  4. Step 4: Simplify right side
    645,327.96x = 316,110,922,454.54
  5. Step 5: Solve for x
    x = 316,110,922,454.54/645,327.96
  6. Step 6: Final answer
    x = 489,845.38

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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.