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Finding the Fourth Proportional to 808,846.40, 1,215,602.40 and 706,203.20

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Solution

The fourth proportional to 808,846.40, 1,215,602.40 and 706,203.20 is: 1,061,341.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    808,846.40 : 1,215,602.40 = 706,203.20 : x
  2. Step 2: Convert to fraction form
    808,846.40/1,215,602.40 = 706,203.20/x
  3. Step 3: Cross multiply
    808,846.40x = 1,215,602.40 × 706,203.20
  4. Step 4: Simplify right side
    808,846.40x = 858,462,304,807.68
  5. Step 5: Solve for x
    x = 858,462,304,807.68/808,846.40
  6. Step 6: Final answer
    x = 1,061,341.57

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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.