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Finding the Fourth Proportional to 811,957.40, 1,138,606.60 and 811,957.40

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Solution

The fourth proportional to 811,957.40, 1,138,606.60 and 811,957.40 is: 1,138,606.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,957.40 : 1,138,606.60 = 811,957.40 : x
  2. Step 2: Convert to fraction form
    811,957.40/1,138,606.60 = 811,957.40/x
  3. Step 3: Cross multiply
    811,957.40x = 1,138,606.60 × 811,957.40
  4. Step 4: Simplify right side
    811,957.40x = 924,500,054,558.84
  5. Step 5: Solve for x
    x = 924,500,054,558.84/811,957.40
  6. Step 6: Final answer
    x = 1,138,606.60

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.