Home / 1,312,798.28-1,968,409.89-513,127.40

Finding the Fourth Proportional to 1,312,798.28, 1,968,409.89 and 513,127.40

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Solution

The fourth proportional to 1,312,798.28, 1,968,409.89 and 513,127.40 is: 769,383.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,312,798.28 : 1,968,409.89 = 513,127.40 : x
  2. Step 2: Convert to fraction form
    1,312,798.28/1,968,409.89 = 513,127.40/x
  3. Step 3: Cross multiply
    1,312,798.28x = 1,968,409.89 × 513,127.40
  4. Step 4: Simplify right side
    1,312,798.28x = 1,010,045,039,147.94
  5. Step 5: Solve for x
    x = 1,010,045,039,147.94/1,312,798.28
  6. Step 6: Final answer
    x = 769,383.28

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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.