Home / 679,579.20-1,019,368.80-455,630.40

Finding the Fourth Proportional to 679,579.20, 1,019,368.80 and 455,630.40

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Solution

The fourth proportional to 679,579.20, 1,019,368.80 and 455,630.40 is: 683,445.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,579.20 : 1,019,368.80 = 455,630.40 : x
  2. Step 2: Convert to fraction form
    679,579.20/1,019,368.80 = 455,630.40/x
  3. Step 3: Cross multiply
    679,579.20x = 1,019,368.80 × 455,630.40
  4. Step 4: Simplify right side
    679,579.20x = 464,455,414,091.52
  5. Step 5: Solve for x
    x = 464,455,414,091.52/679,579.20
  6. Step 6: Final answer
    x = 683,445.60

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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.