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Finding the Fourth Proportional to 522,259.34, 720,653.40 and 318,235.92

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Solution

The fourth proportional to 522,259.34, 720,653.40 and 318,235.92 is: 439,126.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,259.34 : 720,653.40 = 318,235.92 : x
  2. Step 2: Convert to fraction form
    522,259.34/720,653.40 = 318,235.92/x
  3. Step 3: Cross multiply
    522,259.34x = 720,653.40 × 318,235.92
  4. Step 4: Simplify right side
    522,259.34x = 229,337,797,750.13
  5. Step 5: Solve for x
    x = 229,337,797,750.13/522,259.34
  6. Step 6: Final answer
    x = 439,126.28

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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.