Home / 649,815.40-974,577.30-426,741.40

Finding the Fourth Proportional to 649,815.40, 974,577.30 and 426,741.40

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Solution

The fourth proportional to 649,815.40, 974,577.30 and 426,741.40 is: 640,016.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    649,815.40 : 974,577.30 = 426,741.40 : x
  2. Step 2: Convert to fraction form
    649,815.40/974,577.30 = 426,741.40/x
  3. Step 3: Cross multiply
    649,815.40x = 974,577.30 × 426,741.40
  4. Step 4: Simplify right side
    649,815.40x = 415,892,481,410.22
  5. Step 5: Solve for x
    x = 415,892,481,410.22/649,815.40
  6. Step 6: Final answer
    x = 640,016.35

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Double scale
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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.