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Finding the Fourth Proportional to 540,421.70, 745,768.98 and 295,395.52

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Solution

The fourth proportional to 540,421.70, 745,768.98 and 295,395.52 is: 407,638.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    540,421.70 : 745,768.98 = 295,395.52 : x
  2. Step 2: Convert to fraction form
    540,421.70/745,768.98 = 295,395.52/x
  3. Step 3: Cross multiply
    540,421.70x = 745,768.98 × 295,395.52
  4. Step 4: Simplify right side
    540,421.70x = 220,296,815,646.97
  5. Step 5: Solve for x
    x = 220,296,815,646.97/540,421.70
  6. Step 6: Final answer
    x = 407,638.73

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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.