Home / 526,632.90-789,949.35-421,656.90

Finding the Fourth Proportional to 526,632.90, 789,949.35 and 421,656.90

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Solution

The fourth proportional to 526,632.90, 789,949.35 and 421,656.90 is: 632,485.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    526,632.90 : 789,949.35 = 421,656.90 : x
  2. Step 2: Convert to fraction form
    526,632.90/789,949.35 = 421,656.90/x
  3. Step 3: Cross multiply
    526,632.90x = 789,949.35 × 421,656.90
  4. Step 4: Simplify right side
    526,632.90x = 333,087,594,078.02
  5. Step 5: Solve for x
    x = 333,087,594,078.02/526,632.90
  6. Step 6: Final answer
    x = 632,485.35

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Half scale
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Double scale
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Similar ratio
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1.5x scale

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.