Home / 718,374-1,077,566.40-318,907.38

Finding the Fourth Proportional to 718,374, 1,077,566.40 and 318,907.38

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Solution

The fourth proportional to 718,374, 1,077,566.40 and 318,907.38 is: 478,363.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,374 : 1,077,566.40 = 318,907.38 : x
  2. Step 2: Convert to fraction form
    718,374/1,077,566.40 = 318,907.38/x
  3. Step 3: Cross multiply
    718,374x = 1,077,566.40 × 318,907.38
  4. Step 4: Simplify right side
    718,374x = 343,643,877,400.03
  5. Step 5: Solve for x
    x = 343,643,877,400.03/718,374
  6. Step 6: Final answer
    x = 478,363.47

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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.