Home / 1,209,395.89-1,668,924.48-665,480.82

Finding the Fourth Proportional to 1,209,395.89, 1,668,924.48 and 665,480.82

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Solution

The fourth proportional to 1,209,395.89, 1,668,924.48 and 665,480.82 is: 918,340.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,209,395.89 : 1,668,924.48 = 665,480.82 : x
  2. Step 2: Convert to fraction form
    1,209,395.89/1,668,924.48 = 665,480.82/x
  3. Step 3: Cross multiply
    1,209,395.89x = 1,668,924.48 × 665,480.82
  4. Step 4: Simplify right side
    1,209,395.89x = 1,110,637,231,468.47
  5. Step 5: Solve for x
    x = 1,110,637,231,468.47/1,209,395.89
  6. Step 6: Final answer
    x = 918,340.50

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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.