Home / 648,125.20-970,632.60-315,312.40

Finding the Fourth Proportional to 648,125.20, 970,632.60 and 315,312.40

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Solution

The fourth proportional to 648,125.20, 970,632.60 and 315,312.40 is: 472,212.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,125.20 : 970,632.60 = 315,312.40 : x
  2. Step 2: Convert to fraction form
    648,125.20/970,632.60 = 315,312.40/x
  3. Step 3: Cross multiply
    648,125.20x = 970,632.60 × 315,312.40
  4. Step 4: Simplify right side
    648,125.20x = 306,052,494,624.24
  5. Step 5: Solve for x
    x = 306,052,494,624.24/648,125.20
  6. Step 6: Final answer
    x = 472,212.00

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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.