Home / 780,225.90-1,170,630.45-307,240.98

Finding the Fourth Proportional to 780,225.90, 1,170,630.45 and 307,240.98

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Solution

The fourth proportional to 780,225.90, 1,170,630.45 and 307,240.98 is: 460,976.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,225.90 : 1,170,630.45 = 307,240.98 : x
  2. Step 2: Convert to fraction form
    780,225.90/1,170,630.45 = 307,240.98/x
  3. Step 3: Cross multiply
    780,225.90x = 1,170,630.45 × 307,240.98
  4. Step 4: Simplify right side
    780,225.90x = 359,665,646,675.84
  5. Step 5: Solve for x
    x = 359,665,646,675.84/780,225.90
  6. Step 6: Final answer
    x = 460,976.30

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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.