Home / 818,535.10-1,129,428.53-455,949.94

Finding the Fourth Proportional to 818,535.10, 1,129,428.53 and 455,949.94

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Solution

The fourth proportional to 818,535.10, 1,129,428.53 and 455,949.94 is: 629,127.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    818,535.10 : 1,129,428.53 = 455,949.94 : x
  2. Step 2: Convert to fraction form
    818,535.10/1,129,428.53 = 455,949.94/x
  3. Step 3: Cross multiply
    818,535.10x = 1,129,428.53 × 455,949.94
  4. Step 4: Simplify right side
    818,535.10x = 514,962,865,384.47
  5. Step 5: Solve for x
    x = 514,962,865,384.47/818,535.10
  6. Step 6: Final answer
    x = 629,127.41

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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.