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Finding the Fourth Proportional to 545,412.50, 752,703.44 and 300,397.21

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Solution

The fourth proportional to 545,412.50, 752,703.44 and 300,397.21 is: 414,566.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,412.50 : 752,703.44 = 300,397.21 : x
  2. Step 2: Convert to fraction form
    545,412.50/752,703.44 = 300,397.21/x
  3. Step 3: Cross multiply
    545,412.50x = 752,703.44 × 300,397.21
  4. Step 4: Simplify right side
    545,412.50x = 226,110,009,949.66
  5. Step 5: Solve for x
    x = 226,110,009,949.66/545,412.50
  6. Step 6: Final answer
    x = 414,566.98

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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.