Home / 763,969.40-1,145,117.10-384,284.60

Finding the Fourth Proportional to 763,969.40, 1,145,117.10 and 384,284.60

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Solution

The fourth proportional to 763,969.40, 1,145,117.10 and 384,284.60 is: 576,005.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    763,969.40 : 1,145,117.10 = 384,284.60 : x
  2. Step 2: Convert to fraction form
    763,969.40/1,145,117.10 = 384,284.60/x
  3. Step 3: Cross multiply
    763,969.40x = 1,145,117.10 × 384,284.60
  4. Step 4: Simplify right side
    763,969.40x = 440,050,866,726.66
  5. Step 5: Solve for x
    x = 440,050,866,726.66/763,969.40
  6. Step 6: Final answer
    x = 576,005.88

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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.