Home / 1,189,501.98-1,641,514.40-645,637.88

Finding the Fourth Proportional to 1,189,501.98, 1,641,514.40 and 645,637.88

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Solution

The fourth proportional to 1,189,501.98, 1,641,514.40 and 645,637.88 is: 890,981.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,501.98 : 1,641,514.40 = 645,637.88 : x
  2. Step 2: Convert to fraction form
    1,189,501.98/1,641,514.40 = 645,637.88/x
  3. Step 3: Cross multiply
    1,189,501.98x = 1,641,514.40 × 645,637.88
  4. Step 4: Simplify right side
    1,189,501.98x = 1,059,823,878,081.07
  5. Step 5: Solve for x
    x = 1,059,823,878,081.07/1,189,501.98
  6. Step 6: Final answer
    x = 890,981.18

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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.