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Finding the Fourth Proportional to 405,604.40, 559,808.96 and 260,591.46

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Solution

The fourth proportional to 405,604.40, 559,808.96 and 260,591.46 is: 359,664.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,604.40 : 559,808.96 = 260,591.46 : x
  2. Step 2: Convert to fraction form
    405,604.40/559,808.96 = 260,591.46/x
  3. Step 3: Cross multiply
    405,604.40x = 559,808.96 × 260,591.46
  4. Step 4: Simplify right side
    405,604.40x = 145,881,434,347.79
  5. Step 5: Solve for x
    x = 145,881,434,347.79/405,604.40
  6. Step 6: Final answer
    x = 359,664.33

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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.