Home / 712,403.60-983,122.75-422,031.68

Finding the Fourth Proportional to 712,403.60, 983,122.75 and 422,031.68

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Solution

The fourth proportional to 712,403.60, 983,122.75 and 422,031.68 is: 582,407.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,403.60 : 983,122.75 = 422,031.68 : x
  2. Step 2: Convert to fraction form
    712,403.60/983,122.75 = 422,031.68/x
  3. Step 3: Cross multiply
    712,403.60x = 983,122.75 × 422,031.68
  4. Step 4: Simplify right side
    712,403.60x = 414,908,940,913.11
  5. Step 5: Solve for x
    x = 414,908,940,913.11/712,403.60
  6. Step 6: Final answer
    x = 582,407.14

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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.