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Finding the Fourth Proportional to 434,561.60, 651,064.80 and 355,246.40

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Solution

The fourth proportional to 434,561.60, 651,064.80 and 355,246.40 is: 532,233.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    434,561.60 : 651,064.80 = 355,246.40 : x
  2. Step 2: Convert to fraction form
    434,561.60/651,064.80 = 355,246.40/x
  3. Step 3: Cross multiply
    434,561.60x = 651,064.80 × 355,246.40
  4. Step 4: Simplify right side
    434,561.60x = 231,288,426,366.72
  5. Step 5: Solve for x
    x = 231,288,426,366.72/434,561.60
  6. Step 6: Final answer
    x = 532,233.93

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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.