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Finding the Fourth Proportional to 1,209,003, 1,668,424.10 and 665,127.09

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Solution

The fourth proportional to 1,209,003, 1,668,424.10 and 665,127.09 is: 917,875.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,209,003 : 1,668,424.10 = 665,127.09 : x
  2. Step 2: Convert to fraction form
    1,209,003/1,668,424.10 = 665,127.09/x
  3. Step 3: Cross multiply
    1,209,003x = 1,668,424.10 × 665,127.09
  4. Step 4: Simplify right side
    1,209,003x = 1,109,714,063,193.23
  5. Step 5: Solve for x
    x = 1,109,714,063,193.23/1,209,003
  6. Step 6: Final answer
    x = 917,875.36

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1.5x scale

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.