Home / 679,543.20-1,019,314.80-455,594.40

Finding the Fourth Proportional to 679,543.20, 1,019,314.80 and 455,594.40

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Solution

The fourth proportional to 679,543.20, 1,019,314.80 and 455,594.40 is: 683,391.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,543.20 : 1,019,314.80 = 455,594.40 : x
  2. Step 2: Convert to fraction form
    679,543.20/1,019,314.80 = 455,594.40/x
  3. Step 3: Cross multiply
    679,543.20x = 1,019,314.80 × 455,594.40
  4. Step 4: Simplify right side
    679,543.20x = 464,394,114,717.12
  5. Step 5: Solve for x
    x = 464,394,114,717.12/679,543.20
  6. Step 6: Final answer
    x = 683,391.60

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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.