Home / 814,421.98-1,220,907.04-309,337.65

Finding the Fourth Proportional to 814,421.98, 1,220,907.04 and 309,337.65

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Solution

The fourth proportional to 814,421.98, 1,220,907.04 and 309,337.65 is: 463,730.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    814,421.98 : 1,220,907.04 = 309,337.65 : x
  2. Step 2: Convert to fraction form
    814,421.98/1,220,907.04 = 309,337.65/x
  3. Step 3: Cross multiply
    814,421.98x = 1,220,907.04 × 309,337.65
  4. Step 4: Simplify right side
    814,421.98x = 377,672,513,848.71
  5. Step 5: Solve for x
    x = 377,672,513,848.71/814,421.98
  6. Step 6: Final answer
    x = 463,730.75

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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.