Home / 526,631.60-789,947.40-421,655.60

Finding the Fourth Proportional to 526,631.60, 789,947.40 and 421,655.60

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Solution

The fourth proportional to 526,631.60, 789,947.40 and 421,655.60 is: 632,483.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    526,631.60 : 789,947.40 = 421,655.60 : x
  2. Step 2: Convert to fraction form
    526,631.60/789,947.40 = 421,655.60/x
  3. Step 3: Cross multiply
    526,631.60x = 789,947.40 × 421,655.60
  4. Step 4: Simplify right side
    526,631.60x = 333,085,744,915.44
  5. Step 5: Solve for x
    x = 333,085,744,915.44/526,631.60
  6. Step 6: Final answer
    x = 632,483.40

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Half scale
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Double scale
Find fourth proportional to 526,632.60, 789,948.90 and 421,656.60
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.