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Finding the Fourth Proportional to 455,503.80, 683,255.70 and 315,535.80

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Solution

The fourth proportional to 455,503.80, 683,255.70 and 315,535.80 is: 473,303.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,503.80 : 683,255.70 = 315,535.80 : x
  2. Step 2: Convert to fraction form
    455,503.80/683,255.70 = 315,535.80/x
  3. Step 3: Cross multiply
    455,503.80x = 683,255.70 × 315,535.80
  4. Step 4: Simplify right side
    455,503.80x = 215,591,633,904.06
  5. Step 5: Solve for x
    x = 215,591,633,904.06/455,503.80
  6. Step 6: Final answer
    x = 473,303.70

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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.