Home / 874,890.20-1,312,335.30-313,851.80

Finding the Fourth Proportional to 874,890.20, 1,312,335.30 and 313,851.80

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Solution

The fourth proportional to 874,890.20, 1,312,335.30 and 313,851.80 is: 470,777.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    874,890.20 : 1,312,335.30 = 313,851.80 : x
  2. Step 2: Convert to fraction form
    874,890.20/1,312,335.30 = 313,851.80/x
  3. Step 3: Cross multiply
    874,890.20x = 1,312,335.30 × 313,851.80
  4. Step 4: Simplify right side
    874,890.20x = 411,878,796,108.54
  5. Step 5: Solve for x
    x = 411,878,796,108.54/874,890.20
  6. Step 6: Final answer
    x = 470,777.70

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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.