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Finding the Fourth Proportional to 545,683.47, 753,013.98 and 300,660.63

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Solution

The fourth proportional to 545,683.47, 753,013.98 and 300,660.63 is: 414,895.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,683.47 : 753,013.98 = 300,660.63 : x
  2. Step 2: Convert to fraction form
    545,683.47/753,013.98 = 300,660.63/x
  3. Step 3: Cross multiply
    545,683.47x = 753,013.98 × 300,660.63
  4. Step 4: Simplify right side
    545,683.47x = 226,401,657,625.61
  5. Step 5: Solve for x
    x = 226,401,657,625.61/545,683.47
  6. Step 6: Final answer
    x = 414,895.58

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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.