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Finding the Fourth Proportional to 520,259.44, 780,332.40 and 352,855.12

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Solution

The fourth proportional to 520,259.44, 780,332.40 and 352,855.12 is: 529,244.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,259.44 : 780,332.40 = 352,855.12 : x
  2. Step 2: Convert to fraction form
    520,259.44/780,332.40 = 352,855.12/x
  3. Step 3: Cross multiply
    520,259.44x = 780,332.40 × 352,855.12
  4. Step 4: Simplify right side
    520,259.44x = 275,344,282,641.89
  5. Step 5: Solve for x
    x = 275,344,282,641.89/520,259.44
  6. Step 6: Final answer
    x = 529,244.18

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1.5x scale

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.