Home / 718,370-1,077,560.40-318,903.38

Finding the Fourth Proportional to 718,370, 1,077,560.40 and 318,903.38

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Solution

The fourth proportional to 718,370, 1,077,560.40 and 318,903.38 is: 478,357.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,370 : 1,077,560.40 = 318,903.38 : x
  2. Step 2: Convert to fraction form
    718,370/1,077,560.40 = 318,903.38/x
  3. Step 3: Cross multiply
    718,370x = 1,077,560.40 × 318,903.38
  4. Step 4: Simplify right side
    718,370x = 343,637,653,714.15
  5. Step 5: Solve for x
    x = 343,637,653,714.15/718,370
  6. Step 6: Final answer
    x = 478,357.47

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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.