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Finding the Fourth Proportional to 985,300.80, 1,477,951.20 and 453,859.80

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Solution

The fourth proportional to 985,300.80, 1,477,951.20 and 453,859.80 is: 680,789.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    985,300.80 : 1,477,951.20 = 453,859.80 : x
  2. Step 2: Convert to fraction form
    985,300.80/1,477,951.20 = 453,859.80/x
  3. Step 3: Cross multiply
    985,300.80x = 1,477,951.20 × 453,859.80
  4. Step 4: Simplify right side
    985,300.80x = 670,782,636,041.76
  5. Step 5: Solve for x
    x = 670,782,636,041.76/985,300.80
  6. Step 6: Final answer
    x = 680,789.70

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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.