Home / 641,743.96-885,328.60-386,953.60

Finding the Fourth Proportional to 641,743.96, 885,328.60 and 386,953.60

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Solution

The fourth proportional to 641,743.96, 885,328.60 and 386,953.60 is: 533,828.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,743.96 : 885,328.60 = 386,953.60 : x
  2. Step 2: Convert to fraction form
    641,743.96/885,328.60 = 386,953.60/x
  3. Step 3: Cross multiply
    641,743.96x = 885,328.60 × 386,953.60
  4. Step 4: Simplify right side
    641,743.96x = 342,581,088,952.96
  5. Step 5: Solve for x
    x = 342,581,088,952.96/641,743.96
  6. Step 6: Final answer
    x = 533,828.30

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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.