Home / 692,214.40-1,038,321.60-318,966.40

Finding the Fourth Proportional to 692,214.40, 1,038,321.60 and 318,966.40

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Solution

The fourth proportional to 692,214.40, 1,038,321.60 and 318,966.40 is: 478,449.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    692,214.40 : 1,038,321.60 = 318,966.40 : x
  2. Step 2: Convert to fraction form
    692,214.40/1,038,321.60 = 318,966.40/x
  3. Step 3: Cross multiply
    692,214.40x = 1,038,321.60 × 318,966.40
  4. Step 4: Simplify right side
    692,214.40x = 331,189,702,794.24
  5. Step 5: Solve for x
    x = 331,189,702,794.24/692,214.40
  6. Step 6: Final answer
    x = 478,449.60

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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.