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Finding the Fourth Proportional to 646,300.16, 891,892.32 and 359,812.88

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Solution

The fourth proportional to 646,300.16, 891,892.32 and 359,812.88 is: 496,540.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,300.16 : 891,892.32 = 359,812.88 : x
  2. Step 2: Convert to fraction form
    646,300.16/891,892.32 = 359,812.88/x
  3. Step 3: Cross multiply
    646,300.16x = 891,892.32 × 359,812.88
  4. Step 4: Simplify right side
    646,300.16x = 320,914,344,309.08
  5. Step 5: Solve for x
    x = 320,914,344,309.08/646,300.16
  6. Step 6: Final answer
    x = 496,540.72

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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.