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Finding the Fourth Proportional to 550,415.34, 759,581.31 and 320,966.23

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Solution

The fourth proportional to 550,415.34, 759,581.31 and 320,966.23 is: 442,938.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    550,415.34 : 759,581.31 = 320,966.23 : x
  2. Step 2: Convert to fraction form
    550,415.34/759,581.31 = 320,966.23/x
  3. Step 3: Cross multiply
    550,415.34x = 759,581.31 × 320,966.23
  4. Step 4: Simplify right side
    550,415.34x = 243,799,949,449.16
  5. Step 5: Solve for x
    x = 243,799,949,449.16/550,415.34
  6. Step 6: Final answer
    x = 442,938.14

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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.