Home / 687,511.03-948,758.02-381,590.05

Finding the Fourth Proportional to 687,511.03, 948,758.02 and 381,590.05

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Solution

The fourth proportional to 687,511.03, 948,758.02 and 381,590.05 is: 526,590.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,511.03 : 948,758.02 = 381,590.05 : x
  2. Step 2: Convert to fraction form
    687,511.03/948,758.02 = 381,590.05/x
  3. Step 3: Cross multiply
    687,511.03x = 948,758.02 × 381,590.05
  4. Step 4: Simplify right side
    687,511.03x = 362,036,620,289.70
  5. Step 5: Solve for x
    x = 362,036,620,289.70/687,511.03
  6. Step 6: Final answer
    x = 526,590.27

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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.