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Finding the Fourth Proportional to 646,528.70, 891,339.95 and 452,675.64

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Solution

The fourth proportional to 646,528.70, 891,339.95 and 452,675.64 is: 624,083.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,528.70 : 891,339.95 = 452,675.64 : x
  2. Step 2: Convert to fraction form
    646,528.70/891,339.95 = 452,675.64/x
  3. Step 3: Cross multiply
    646,528.70x = 891,339.95 × 452,675.64
  4. Step 4: Simplify right side
    646,528.70x = 403,487,880,060.44
  5. Step 5: Solve for x
    x = 403,487,880,060.44/646,528.70
  6. Step 6: Final answer
    x = 624,083.48

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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.