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Finding the Fourth Proportional to 660,046.51, 910,864.20 and 358,240.51

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Solution

The fourth proportional to 660,046.51, 910,864.20 and 358,240.51 is: 494,371.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,046.51 : 910,864.20 = 358,240.51 : x
  2. Step 2: Convert to fraction form
    660,046.51/910,864.20 = 358,240.51/x
  3. Step 3: Cross multiply
    660,046.51x = 910,864.20 × 358,240.51
  4. Step 4: Simplify right side
    660,046.51x = 326,308,455,548.74
  5. Step 5: Solve for x
    x = 326,308,455,548.74/660,046.51
  6. Step 6: Final answer
    x = 494,371.91

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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.