Home / 923,406.40-1,385,109.60-425,742.40

Finding the Fourth Proportional to 923,406.40, 1,385,109.60 and 425,742.40

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Solution

The fourth proportional to 923,406.40, 1,385,109.60 and 425,742.40 is: 638,613.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    923,406.40 : 1,385,109.60 = 425,742.40 : x
  2. Step 2: Convert to fraction form
    923,406.40/1,385,109.60 = 425,742.40/x
  3. Step 3: Cross multiply
    923,406.40x = 1,385,109.60 × 425,742.40
  4. Step 4: Simplify right side
    923,406.40x = 589,699,885,367.04
  5. Step 5: Solve for x
    x = 589,699,885,367.04/923,406.40
  6. Step 6: Final answer
    x = 638,613.60

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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.