Home / 455,434.80-683,152.20-306,135.60

Finding the Fourth Proportional to 455,434.80, 683,152.20 and 306,135.60

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Solution

The fourth proportional to 455,434.80, 683,152.20 and 306,135.60 is: 459,203.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,434.80 : 683,152.20 = 306,135.60 : x
  2. Step 2: Convert to fraction form
    455,434.80/683,152.20 = 306,135.60/x
  3. Step 3: Cross multiply
    455,434.80x = 683,152.20 × 306,135.60
  4. Step 4: Simplify right side
    455,434.80x = 209,137,208,638.32
  5. Step 5: Solve for x
    x = 209,137,208,638.32/455,434.80
  6. Step 6: Final answer
    x = 459,203.40

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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.