Home / 718,368-1,077,557.40-318,901.38

Finding the Fourth Proportional to 718,368, 1,077,557.40 and 318,901.38

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Solution

The fourth proportional to 718,368, 1,077,557.40 and 318,901.38 is: 478,354.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,368 : 1,077,557.40 = 318,901.38 : x
  2. Step 2: Convert to fraction form
    718,368/1,077,557.40 = 318,901.38/x
  3. Step 3: Cross multiply
    718,368x = 1,077,557.40 × 318,901.38
  4. Step 4: Simplify right side
    718,368x = 343,634,541,889.21
  5. Step 5: Solve for x
    x = 343,634,541,889.21/718,368
  6. Step 6: Final answer
    x = 478,354.47

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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.