Home / 688,223.80-1,031,990.10-313,823.80

Finding the Fourth Proportional to 688,223.80, 1,031,990.10 and 313,823.80

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Solution

The fourth proportional to 688,223.80, 1,031,990.10 and 313,823.80 is: 470,578.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,223.80 : 1,031,990.10 = 313,823.80 : x
  2. Step 2: Convert to fraction form
    688,223.80/1,031,990.10 = 313,823.80/x
  3. Step 3: Cross multiply
    688,223.80x = 1,031,990.10 × 313,823.80
  4. Step 4: Simplify right side
    688,223.80x = 323,863,054,744.38
  5. Step 5: Solve for x
    x = 323,863,054,744.38/688,223.80
  6. Step 6: Final answer
    x = 470,578.11

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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.