Home / 679,941.20-1,019,911.80-455,992.40

Finding the Fourth Proportional to 679,941.20, 1,019,911.80 and 455,992.40

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Solution

The fourth proportional to 679,941.20, 1,019,911.80 and 455,992.40 is: 683,988.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,941.20 : 1,019,911.80 = 455,992.40 : x
  2. Step 2: Convert to fraction form
    679,941.20/1,019,911.80 = 455,992.40/x
  3. Step 3: Cross multiply
    679,941.20x = 1,019,911.80 × 455,992.40
  4. Step 4: Simplify right side
    679,941.20x = 465,072,029,470.32
  5. Step 5: Solve for x
    x = 465,072,029,470.32/679,941.20
  6. Step 6: Final answer
    x = 683,988.60

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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.