Home / 1,094,430.72-1,641,818.88-420,485.12

Finding the Fourth Proportional to 1,094,430.72, 1,641,818.88 and 420,485.12

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Solution

The fourth proportional to 1,094,430.72, 1,641,818.88 and 420,485.12 is: 630,794.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,094,430.72 : 1,641,818.88 = 420,485.12 : x
  2. Step 2: Convert to fraction form
    1,094,430.72/1,641,818.88 = 420,485.12/x
  3. Step 3: Cross multiply
    1,094,430.72x = 1,641,818.88 × 420,485.12
  4. Step 4: Simplify right side
    1,094,430.72x = 690,360,408,775.07
  5. Step 5: Solve for x
    x = 690,360,408,775.07/1,094,430.72
  6. Step 6: Final answer
    x = 630,794.07

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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.