Home / 1,189,798.49-1,641,921.95-645,933.51

Finding the Fourth Proportional to 1,189,798.49, 1,641,921.95 and 645,933.51

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Solution

The fourth proportional to 1,189,798.49, 1,641,921.95 and 645,933.51 is: 891,388.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,798.49 : 1,641,921.95 = 645,933.51 : x
  2. Step 2: Convert to fraction form
    1,189,798.49/1,641,921.95 = 645,933.51/x
  3. Step 3: Cross multiply
    1,189,798.49x = 1,641,921.95 × 645,933.51
  4. Step 4: Simplify right side
    1,189,798.49x = 1,060,572,409,924.38
  5. Step 5: Solve for x
    x = 1,060,572,409,924.38/1,189,798.49
  6. Step 6: Final answer
    x = 891,388.26

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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.