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Finding the Fourth Proportional to 530,036.76, 731,447.16 and 300,638.69

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Solution

The fourth proportional to 530,036.76, 731,447.16 and 300,638.69 is: 414,879.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,036.76 : 731,447.16 = 300,638.69 : x
  2. Step 2: Convert to fraction form
    530,036.76/731,447.16 = 300,638.69/x
  3. Step 3: Cross multiply
    530,036.76x = 731,447.16 × 300,638.69
  4. Step 4: Simplify right side
    530,036.76x = 219,901,315,636.01
  5. Step 5: Solve for x
    x = 219,901,315,636.01/530,036.76
  6. Step 6: Final answer
    x = 414,879.36

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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.