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Finding the Fourth Proportional to 626,378.76, 864,421.92 and 368,208.36

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Solution

The fourth proportional to 626,378.76, 864,421.92 and 368,208.36 is: 508,138.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,378.76 : 864,421.92 = 368,208.36 : x
  2. Step 2: Convert to fraction form
    626,378.76/864,421.92 = 368,208.36/x
  3. Step 3: Cross multiply
    626,378.76x = 864,421.92 × 368,208.36
  4. Step 4: Simplify right side
    626,378.76x = 318,287,377,511.25
  5. Step 5: Solve for x
    x = 318,287,377,511.25/626,378.76
  6. Step 6: Final answer
    x = 508,138.84

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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.