Home / 1,209,030.54-1,668,462.21-665,154.69

Finding the Fourth Proportional to 1,209,030.54, 1,668,462.21 and 665,154.69

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Solution

The fourth proportional to 1,209,030.54, 1,668,462.21 and 665,154.69 is: 917,913.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,209,030.54 : 1,668,462.21 = 665,154.69 : x
  2. Step 2: Convert to fraction form
    1,209,030.54/1,668,462.21 = 665,154.69/x
  3. Step 3: Cross multiply
    1,209,030.54x = 1,668,462.21 × 665,154.69
  4. Step 4: Simplify right side
    1,209,030.54x = 1,109,785,464,069.26
  5. Step 5: Solve for x
    x = 1,109,785,464,069.26/1,209,030.54
  6. Step 6: Final answer
    x = 917,913.51

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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.