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Finding the Fourth Proportional to 679,993.70, 1,019,698.95 and 342,904.10

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Solution

The fourth proportional to 679,993.70, 1,019,698.95 and 342,904.10 is: 514,209.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,993.70 : 1,019,698.95 = 342,904.10 : x
  2. Step 2: Convert to fraction form
    679,993.70/1,019,698.95 = 342,904.10/x
  3. Step 3: Cross multiply
    679,993.70x = 1,019,698.95 × 342,904.10
  4. Step 4: Simplify right side
    679,993.70x = 349,658,950,720.70
  5. Step 5: Solve for x
    x = 349,658,950,720.70/679,993.70
  6. Step 6: Final answer
    x = 514,209.10

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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.