Home / 1,209,392.29-1,668,919.51-665,477.19

Finding the Fourth Proportional to 1,209,392.29, 1,668,919.51 and 665,477.19

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Solution

The fourth proportional to 1,209,392.29, 1,668,919.51 and 665,477.19 is: 918,335.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,209,392.29 : 1,668,919.51 = 665,477.19 : x
  2. Step 2: Convert to fraction form
    1,209,392.29/1,668,919.51 = 665,477.19/x
  3. Step 3: Cross multiply
    1,209,392.29x = 1,668,919.51 × 665,477.19
  4. Step 4: Simplify right side
    1,209,392.29x = 1,110,627,866,682.82
  5. Step 5: Solve for x
    x = 1,110,627,866,682.82/1,209,392.29
  6. Step 6: Final answer
    x = 918,335.49

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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.