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Finding the Fourth Proportional to 681,501.40, 940,478.34 and 375,588.80

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Solution

The fourth proportional to 681,501.40, 940,478.34 and 375,588.80 is: 518,316.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,501.40 : 940,478.34 = 375,588.80 : x
  2. Step 2: Convert to fraction form
    681,501.40/940,478.34 = 375,588.80/x
  3. Step 3: Cross multiply
    681,501.40x = 940,478.34 × 375,588.80
  4. Step 4: Simplify right side
    681,501.40x = 353,233,131,379.45
  5. Step 5: Solve for x
    x = 353,233,131,379.45/681,501.40
  6. Step 6: Final answer
    x = 518,316.08

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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.