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Finding the Fourth Proportional to 636,070, 877,739.48 and 349,590.36

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Solution

The fourth proportional to 636,070, 877,739.48 and 349,590.36 is: 482,414.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,070 : 877,739.48 = 349,590.36 : x
  2. Step 2: Convert to fraction form
    636,070/877,739.48 = 349,590.36/x
  3. Step 3: Cross multiply
    636,070x = 877,739.48 × 349,590.36
  4. Step 4: Simplify right side
    636,070x = 306,849,260,799.41
  5. Step 5: Solve for x
    x = 306,849,260,799.41/636,070
  6. Step 6: Final answer
    x = 482,414.30

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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.