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Finding the Fourth Proportional to 540,885.74, 811,323.74 and 380,299.19

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Solution

The fourth proportional to 540,885.74, 811,323.74 and 380,299.19 is: 570,445.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    540,885.74 : 811,323.74 = 380,299.19 : x
  2. Step 2: Convert to fraction form
    540,885.74/811,323.74 = 380,299.19/x
  3. Step 3: Cross multiply
    540,885.74x = 811,323.74 × 380,299.19
  4. Step 4: Simplify right side
    540,885.74x = 308,545,758,043.90
  5. Step 5: Solve for x
    x = 308,545,758,043.90/540,885.74
  6. Step 6: Final answer
    x = 570,445.36

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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.