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Finding the Fourth Proportional to 545,615.61, 752,987.40 and 330,764.73

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Solution

The fourth proportional to 545,615.61, 752,987.40 and 330,764.73 is: 456,478.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,615.61 : 752,987.40 = 330,764.73 : x
  2. Step 2: Convert to fraction form
    545,615.61/752,987.40 = 330,764.73/x
  3. Step 3: Cross multiply
    545,615.61x = 752,987.40 × 330,764.73
  4. Step 4: Simplify right side
    545,615.61x = 249,061,674,054.40
  5. Step 5: Solve for x
    x = 249,061,674,054.40/545,615.61
  6. Step 6: Final answer
    x = 456,478.28

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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.