Home / 807,258.15-1,113,984.90-485,145.45

Finding the Fourth Proportional to 807,258.15, 1,113,984.90 and 485,145.45

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Solution

The fourth proportional to 807,258.15, 1,113,984.90 and 485,145.45 is: 669,481.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    807,258.15 : 1,113,984.90 = 485,145.45 : x
  2. Step 2: Convert to fraction form
    807,258.15/1,113,984.90 = 485,145.45/x
  3. Step 3: Cross multiply
    807,258.15x = 1,113,984.90 × 485,145.45
  4. Step 4: Simplify right side
    807,258.15x = 540,444,705,603.71
  5. Step 5: Solve for x
    x = 540,444,705,603.71/807,258.15
  6. Step 6: Final answer
    x = 669,481.88

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1.5x scale

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.