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Finding the Fourth Proportional to 571,438.40, 856,574.40 and 334,659.20

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Solution

The fourth proportional to 571,438.40, 856,574.40 and 334,659.20 is: 501,647.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,438.40 : 856,574.40 = 334,659.20 : x
  2. Step 2: Convert to fraction form
    571,438.40/856,574.40 = 334,659.20/x
  3. Step 3: Cross multiply
    571,438.40x = 856,574.40 × 334,659.20
  4. Step 4: Simplify right side
    571,438.40x = 286,660,503,444.48
  5. Step 5: Solve for x
    x = 286,660,503,444.48/571,438.40
  6. Step 6: Final answer
    x = 501,647.25

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.