Home / 756,849.86-1,044,986.40-485,616.50

Finding the Fourth Proportional to 756,849.86, 1,044,986.40 and 485,616.50

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Solution

The fourth proportional to 756,849.86, 1,044,986.40 and 485,616.50 is: 670,493.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    756,849.86 : 1,044,986.40 = 485,616.50 : x
  2. Step 2: Convert to fraction form
    756,849.86/1,044,986.40 = 485,616.50/x
  3. Step 3: Cross multiply
    756,849.86x = 1,044,986.40 × 485,616.50
  4. Step 4: Simplify right side
    756,849.86x = 507,462,638,115.60
  5. Step 5: Solve for x
    x = 507,462,638,115.60/756,849.86
  6. Step 6: Final answer
    x = 670,493.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.