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Finding the Fourth Proportional to 811,648, 1,120,078.08 and 453,952

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Solution

The fourth proportional to 811,648, 1,120,078.08 and 453,952 is: 626,455.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,648 : 1,120,078.08 = 453,952 : x
  2. Step 2: Convert to fraction form
    811,648/1,120,078.08 = 453,952/x
  3. Step 3: Cross multiply
    811,648x = 1,120,078.08 × 453,952
  4. Step 4: Simplify right side
    811,648x = 508,461,684,572.16
  5. Step 5: Solve for x
    x = 508,461,684,572.16/811,648
  6. Step 6: Final answer
    x = 626,455.91

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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.