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Finding the Fourth Proportional to 570,321.15, 786,960.81 and 315,671.73

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Solution

The fourth proportional to 570,321.15, 786,960.81 and 315,671.73 is: 435,581.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,321.15 : 786,960.81 = 315,671.73 : x
  2. Step 2: Convert to fraction form
    570,321.15/786,960.81 = 315,671.73/x
  3. Step 3: Cross multiply
    570,321.15x = 786,960.81 × 315,671.73
  4. Step 4: Simplify right side
    570,321.15x = 248,421,280,334.90
  5. Step 5: Solve for x
    x = 248,421,280,334.90/570,321.15
  6. Step 6: Final answer
    x = 435,581.39

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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.