Home / 778,977.38-1,075,168.14-456,791.28

Finding the Fourth Proportional to 778,977.38, 1,075,168.14 and 456,791.28

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Solution

The fourth proportional to 778,977.38, 1,075,168.14 and 456,791.28 is: 630,477.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,977.38 : 1,075,168.14 = 456,791.28 : x
  2. Step 2: Convert to fraction form
    778,977.38/1,075,168.14 = 456,791.28/x
  3. Step 3: Cross multiply
    778,977.38x = 1,075,168.14 × 456,791.28
  4. Step 4: Simplify right side
    778,977.38x = 491,127,430,885.82
  5. Step 5: Solve for x
    x = 491,127,430,885.82/778,977.38
  6. Step 6: Final answer
    x = 630,477.14

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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.