Home / 756,421.20-1,133,076.60-520,030.80

Finding the Fourth Proportional to 756,421.20, 1,133,076.60 and 520,030.80

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Solution

The fourth proportional to 756,421.20, 1,133,076.60 and 520,030.80 is: 778,977.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    756,421.20 : 1,133,076.60 = 520,030.80 : x
  2. Step 2: Convert to fraction form
    756,421.20/1,133,076.60 = 520,030.80/x
  3. Step 3: Cross multiply
    756,421.20x = 1,133,076.60 × 520,030.80
  4. Step 4: Simplify right side
    756,421.20x = 589,234,730,759.28
  5. Step 5: Solve for x
    x = 589,234,730,759.28/756,421.20
  6. Step 6: Final answer
    x = 778,977.02

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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.