Home / 818,653.20-1,225,712.64-418,432.24

Finding the Fourth Proportional to 818,653.20, 1,225,712.64 and 418,432.24

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Solution

The fourth proportional to 818,653.20, 1,225,712.64 and 418,432.24 is: 626,489.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    818,653.20 : 1,225,712.64 = 418,432.24 : x
  2. Step 2: Convert to fraction form
    818,653.20/1,225,712.64 = 418,432.24/x
  3. Step 3: Cross multiply
    818,653.20x = 1,225,712.64 × 418,432.24
  4. Step 4: Simplify right side
    818,653.20x = 512,877,685,551.51
  5. Step 5: Solve for x
    x = 512,877,685,551.51/818,653.20
  6. Step 6: Final answer
    x = 626,489.56

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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.