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Finding the Fourth Proportional to 681,421.53, 940,368.01 and 375,508.86

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Solution

The fourth proportional to 681,421.53, 940,368.01 and 375,508.86 is: 518,205.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,421.53 : 940,368.01 = 375,508.86 : x
  2. Step 2: Convert to fraction form
    681,421.53/940,368.01 = 375,508.86/x
  3. Step 3: Cross multiply
    681,421.53x = 940,368.01 × 375,508.86
  4. Step 4: Simplify right side
    681,421.53x = 353,116,519,415.57
  5. Step 5: Solve for x
    x = 353,116,519,415.57/681,421.53
  6. Step 6: Final answer
    x = 518,205.70

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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.