Home / 1,208,931.17-1,668,259.10-664,979.13

Finding the Fourth Proportional to 1,208,931.17, 1,668,259.10 and 664,979.13

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Solution

The fourth proportional to 1,208,931.17, 1,668,259.10 and 664,979.13 is: 917,634.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,208,931.17 : 1,668,259.10 = 664,979.13 : x
  2. Step 2: Convert to fraction form
    1,208,931.17/1,668,259.10 = 664,979.13/x
  3. Step 3: Cross multiply
    1,208,931.17x = 1,668,259.10 × 664,979.13
  4. Step 4: Simplify right side
    1,208,931.17x = 1,109,357,481,607.69
  5. Step 5: Solve for x
    x = 1,109,357,481,607.69/1,208,931.17
  6. Step 6: Final answer
    x = 917,634.94

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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.