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Finding the Fourth Proportional to 635,339.70, 877,018.59 and 380,641.68

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Solution

The fourth proportional to 635,339.70, 877,018.59 and 380,641.68 is: 525,435.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    635,339.70 : 877,018.59 = 380,641.68 : x
  2. Step 2: Convert to fraction form
    635,339.70/877,018.59 = 380,641.68/x
  3. Step 3: Cross multiply
    635,339.70x = 877,018.59 × 380,641.68
  4. Step 4: Simplify right side
    635,339.70x = 333,829,829,488.83
  5. Step 5: Solve for x
    x = 333,829,829,488.83/635,339.70
  6. Step 6: Final answer
    x = 525,435.18

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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.