Home / 756,400.20-1,133,045.10-520,009.80

Finding the Fourth Proportional to 756,400.20, 1,133,045.10 and 520,009.80

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Solution

The fourth proportional to 756,400.20, 1,133,045.10 and 520,009.80 is: 778,945.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    756,400.20 : 1,133,045.10 = 520,009.80 : x
  2. Step 2: Convert to fraction form
    756,400.20/1,133,045.10 = 520,009.80/x
  3. Step 3: Cross multiply
    756,400.20x = 1,133,045.10 × 520,009.80
  4. Step 4: Simplify right side
    756,400.20x = 589,194,555,841.98
  5. Step 5: Solve for x
    x = 589,194,555,841.98/756,400.20
  6. Step 6: Final answer
    x = 778,945.53

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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.