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Finding the Fourth Proportional to 659,332.36, 989,056.88 and 359,684.20

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Solution

The fourth proportional to 659,332.36, 989,056.88 and 359,684.20 is: 539,558.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,332.36 : 989,056.88 = 359,684.20 : x
  2. Step 2: Convert to fraction form
    659,332.36/989,056.88 = 359,684.20/x
  3. Step 3: Cross multiply
    659,332.36x = 989,056.88 × 359,684.20
  4. Step 4: Simplify right side
    659,332.36x = 355,748,132,637.30
  5. Step 5: Solve for x
    x = 355,748,132,637.30/659,332.36
  6. Step 6: Final answer
    x = 539,558.13

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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.