Home / 389,946.60-584,919.90-345,623.40

Finding the Fourth Proportional to 389,946.60, 584,919.90 and 345,623.40

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Solution

The fourth proportional to 389,946.60, 584,919.90 and 345,623.40 is: 518,435.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,946.60 : 584,919.90 = 345,623.40 : x
  2. Step 2: Convert to fraction form
    389,946.60/584,919.90 = 345,623.40/x
  3. Step 3: Cross multiply
    389,946.60x = 584,919.90 × 345,623.40
  4. Step 4: Simplify right side
    389,946.60x = 202,162,004,565.66
  5. Step 5: Solve for x
    x = 202,162,004,565.66/389,946.60
  6. Step 6: Final answer
    x = 518,435.10

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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.