Home / 985,485.40-1,478,228.10-425,613.40

Finding the Fourth Proportional to 985,485.40, 1,478,228.10 and 425,613.40

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Solution

The fourth proportional to 985,485.40, 1,478,228.10 and 425,613.40 is: 638,420.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    985,485.40 : 1,478,228.10 = 425,613.40 : x
  2. Step 2: Convert to fraction form
    985,485.40/1,478,228.10 = 425,613.40/x
  3. Step 3: Cross multiply
    985,485.40x = 1,478,228.10 × 425,613.40
  4. Step 4: Simplify right side
    985,485.40x = 629,153,687,616.54
  5. Step 5: Solve for x
    x = 629,153,687,616.54/985,485.40
  6. Step 6: Final answer
    x = 638,420.10

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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.