Home / 649,821.60-974,736.60-425,370.48

Finding the Fourth Proportional to 649,821.60, 974,736.60 and 425,370.48

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Solution

The fourth proportional to 649,821.60, 974,736.60 and 425,370.48 is: 638,058.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    649,821.60 : 974,736.60 = 425,370.48 : x
  2. Step 2: Convert to fraction form
    649,821.60/974,736.60 = 425,370.48/x
  3. Step 3: Cross multiply
    649,821.60x = 974,736.60 × 425,370.48
  4. Step 4: Simplify right side
    649,821.60x = 414,624,175,415.57
  5. Step 5: Solve for x
    x = 414,624,175,415.57/649,821.60
  6. Step 6: Final answer
    x = 638,058.47

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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.