Home / 923,430.60-1,385,145.90-820,211.40

Finding the Fourth Proportional to 923,430.60, 1,385,145.90 and 820,211.40

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Solution

The fourth proportional to 923,430.60, 1,385,145.90 and 820,211.40 is: 1,230,317.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    923,430.60 : 1,385,145.90 = 820,211.40 : x
  2. Step 2: Convert to fraction form
    923,430.60/1,385,145.90 = 820,211.40/x
  3. Step 3: Cross multiply
    923,430.60x = 1,385,145.90 × 820,211.40
  4. Step 4: Simplify right side
    923,430.60x = 1,136,112,457,843.26
  5. Step 5: Solve for x
    x = 1,136,112,457,843.26/923,430.60
  6. Step 6: Final answer
    x = 1,230,317.10

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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.