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Finding the Fourth Proportional to 522,688.19, 720,546.20 and 369,456.03

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Solution

The fourth proportional to 522,688.19, 720,546.20 and 369,456.03 is: 509,309.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,688.19 : 720,546.20 = 369,456.03 : x
  2. Step 2: Convert to fraction form
    522,688.19/720,546.20 = 369,456.03/x
  3. Step 3: Cross multiply
    522,688.19x = 720,546.20 × 369,456.03
  4. Step 4: Simplify right side
    522,688.19x = 266,210,138,021.77
  5. Step 5: Solve for x
    x = 266,210,138,021.77/522,688.19
  6. Step 6: Final answer
    x = 509,309.65

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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.