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Finding the Fourth Proportional to 622,459.40, 859,008.60 and 346,835.88

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Solution

The fourth proportional to 622,459.40, 859,008.60 and 346,835.88 is: 478,641.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    622,459.40 : 859,008.60 = 346,835.88 : x
  2. Step 2: Convert to fraction form
    622,459.40/859,008.60 = 346,835.88/x
  3. Step 3: Cross multiply
    622,459.40x = 859,008.60 × 346,835.88
  4. Step 4: Simplify right side
    622,459.40x = 297,935,003,708.57
  5. Step 5: Solve for x
    x = 297,935,003,708.57/622,459.40
  6. Step 6: Final answer
    x = 478,641.67

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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.