Home / 1,209,003.55-1,668,424.88-665,127.67

Finding the Fourth Proportional to 1,209,003.55, 1,668,424.88 and 665,127.67

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Solution

The fourth proportional to 1,209,003.55, 1,668,424.88 and 665,127.67 is: 917,876.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,209,003.55 : 1,668,424.88 = 665,127.67 : x
  2. Step 2: Convert to fraction form
    1,209,003.55/1,668,424.88 = 665,127.67/x
  3. Step 3: Cross multiply
    1,209,003.55x = 1,668,424.88 × 665,127.67
  4. Step 4: Simplify right side
    1,209,003.55x = 1,109,715,550,496.19
  5. Step 5: Solve for x
    x = 1,109,715,550,496.19/1,209,003.55
  6. Step 6: Final answer
    x = 917,876.17

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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.