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Finding the Fourth Proportional to 681,807.68, 940,900.68 and 375,894.90

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Solution

The fourth proportional to 681,807.68, 940,900.68 and 375,894.90 is: 518,738.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,807.68 : 940,900.68 = 375,894.90 : x
  2. Step 2: Convert to fraction form
    681,807.68/940,900.68 = 375,894.90/x
  3. Step 3: Cross multiply
    681,807.68x = 940,900.68 × 375,894.90
  4. Step 4: Simplify right side
    681,807.68x = 353,679,767,018.53
  5. Step 5: Solve for x
    x = 353,679,767,018.53/681,807.68
  6. Step 6: Final answer
    x = 518,738.32

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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.