Home / 786,615.90-1,180,215.45-313,640.70

Finding the Fourth Proportional to 786,615.90, 1,180,215.45 and 313,640.70

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Solution

The fourth proportional to 786,615.90, 1,180,215.45 and 313,640.70 is: 470,577.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    786,615.90 : 1,180,215.45 = 313,640.70 : x
  2. Step 2: Convert to fraction form
    786,615.90/1,180,215.45 = 313,640.70/x
  3. Step 3: Cross multiply
    786,615.90x = 1,180,215.45 × 313,640.70
  4. Step 4: Simplify right side
    786,615.90x = 370,163,599,888.82
  5. Step 5: Solve for x
    x = 370,163,599,888.82/786,615.90
  6. Step 6: Final answer
    x = 470,577.32

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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.