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Finding the Fourth Proportional to 679,488.97, 937,618.59 and 407,567.92

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Solution

The fourth proportional to 679,488.97, 937,618.59 and 407,567.92 is: 562,398.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,488.97 : 937,618.59 = 407,567.92 : x
  2. Step 2: Convert to fraction form
    679,488.97/937,618.59 = 407,567.92/x
  3. Step 3: Cross multiply
    679,488.97x = 937,618.59 × 407,567.92
  4. Step 4: Simplify right side
    679,488.97x = 382,143,258,479.63
  5. Step 5: Solve for x
    x = 382,143,258,479.63/679,488.97
  6. Step 6: Final answer
    x = 562,398.03

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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.