Home / 1,380,078.64-2,069,417.88-631,483.12

Finding the Fourth Proportional to 1,380,078.64, 2,069,417.88 and 631,483.12

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Solution

The fourth proportional to 1,380,078.64, 2,069,417.88 and 631,483.12 is: 946,904.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,380,078.64 : 2,069,417.88 = 631,483.12 : x
  2. Step 2: Convert to fraction form
    1,380,078.64/2,069,417.88 = 631,483.12/x
  3. Step 3: Cross multiply
    1,380,078.64x = 2,069,417.88 × 631,483.12
  4. Step 4: Simplify right side
    1,380,078.64x = 1,306,802,459,446.19
  5. Step 5: Solve for x
    x = 1,306,802,459,446.19/1,380,078.64
  6. Step 6: Final answer
    x = 946,904.34

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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.