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Finding the Fourth Proportional to 640,018.26, 960,486.66 and 373,860.36

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Solution

The fourth proportional to 640,018.26, 960,486.66 and 373,860.36 is: 561,058.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,018.26 : 960,486.66 = 373,860.36 : x
  2. Step 2: Convert to fraction form
    640,018.26/960,486.66 = 373,860.36/x
  3. Step 3: Cross multiply
    640,018.26x = 960,486.66 × 373,860.36
  4. Step 4: Simplify right side
    640,018.26x = 359,087,888,482.80
  5. Step 5: Solve for x
    x = 359,087,888,482.80/640,018.26
  6. Step 6: Final answer
    x = 561,058.82

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.