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Finding the Fourth Proportional to 659,328.36, 989,050.86 and 359,680.20

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Solution

The fourth proportional to 659,328.36, 989,050.86 and 359,680.20 is: 539,552.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,328.36 : 989,050.86 = 359,680.20 : x
  2. Step 2: Convert to fraction form
    659,328.36/989,050.86 = 359,680.20/x
  3. Step 3: Cross multiply
    659,328.36x = 989,050.86 × 359,680.20
  4. Step 4: Simplify right side
    659,328.36x = 355,742,011,134.97
  5. Step 5: Solve for x
    x = 355,742,011,134.97/659,328.36
  6. Step 6: Final answer
    x = 539,552.12

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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.