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Finding the Fourth Proportional to 384,616.40, 576,924.60 and 278,328.20

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Solution

The fourth proportional to 384,616.40, 576,924.60 and 278,328.20 is: 417,492.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,616.40 : 576,924.60 = 278,328.20 : x
  2. Step 2: Convert to fraction form
    384,616.40/576,924.60 = 278,328.20/x
  3. Step 3: Cross multiply
    384,616.40x = 576,924.60 × 278,328.20
  4. Step 4: Simplify right side
    384,616.40x = 160,574,385,453.72
  5. Step 5: Solve for x
    x = 160,574,385,453.72/384,616.40
  6. Step 6: Final answer
    x = 417,492.30

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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.