Home / 818,962.89-1,130,153.43-456,378.76

Finding the Fourth Proportional to 818,962.89, 1,130,153.43 and 456,378.76

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Solution

The fourth proportional to 818,962.89, 1,130,153.43 and 456,378.76 is: 629,794.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    818,962.89 : 1,130,153.43 = 456,378.76 : x
  2. Step 2: Convert to fraction form
    818,962.89/1,130,153.43 = 456,378.76/x
  3. Step 3: Cross multiply
    818,962.89x = 1,130,153.43 × 456,378.76
  4. Step 4: Simplify right side
    818,962.89x = 515,778,020,993.15
  5. Step 5: Solve for x
    x = 515,778,020,993.15/818,962.89
  6. Step 6: Final answer
    x = 629,794.13

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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.