Home / 541,804.20-811,928.70-398,531.40

Finding the Fourth Proportional to 541,804.20, 811,928.70 and 398,531.40

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Solution

The fourth proportional to 541,804.20, 811,928.70 and 398,531.40 is: 597,225.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    541,804.20 : 811,928.70 = 398,531.40 : x
  2. Step 2: Convert to fraction form
    541,804.20/811,928.70 = 398,531.40/x
  3. Step 3: Cross multiply
    541,804.20x = 811,928.70 × 398,531.40
  4. Step 4: Simplify right side
    541,804.20x = 323,579,081,511.18
  5. Step 5: Solve for x
    x = 323,579,081,511.18/541,804.20
  6. Step 6: Final answer
    x = 597,225.13

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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.