Home / 687,510.03-948,756.65-381,589.05

Finding the Fourth Proportional to 687,510.03, 948,756.65 and 381,589.05

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Solution

The fourth proportional to 687,510.03, 948,756.65 and 381,589.05 is: 526,588.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,510.03 : 948,756.65 = 381,589.05 : x
  2. Step 2: Convert to fraction form
    687,510.03/948,756.65 = 381,589.05/x
  3. Step 3: Cross multiply
    687,510.03x = 948,756.65 × 381,589.05
  4. Step 4: Simplify right side
    687,510.03x = 362,035,147,736.20
  5. Step 5: Solve for x
    x = 362,035,147,736.20/687,510.03
  6. Step 6: Final answer
    x = 526,588.90

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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.