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Finding the Fourth Proportional to 642,073.63, 885,860.71 and 370,104.39

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Solution

The fourth proportional to 642,073.63, 885,860.71 and 370,104.39 is: 510,628.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,073.63 : 885,860.71 = 370,104.39 : x
  2. Step 2: Convert to fraction form
    642,073.63/885,860.71 = 370,104.39/x
  3. Step 3: Cross multiply
    642,073.63x = 885,860.71 × 370,104.39
  4. Step 4: Simplify right side
    642,073.63x = 327,860,937,699.52
  5. Step 5: Solve for x
    x = 327,860,937,699.52/642,073.63
  6. Step 6: Final answer
    x = 510,628.26

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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.