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Finding the Fourth Proportional to 573,679.20, 860,518.80 and 384,722.40

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Solution

The fourth proportional to 573,679.20, 860,518.80 and 384,722.40 is: 577,083.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    573,679.20 : 860,518.80 = 384,722.40 : x
  2. Step 2: Convert to fraction form
    573,679.20/860,518.80 = 384,722.40/x
  3. Step 3: Cross multiply
    573,679.20x = 860,518.80 × 384,722.40
  4. Step 4: Simplify right side
    573,679.20x = 331,060,857,981.12
  5. Step 5: Solve for x
    x = 331,060,857,981.12/573,679.20
  6. Step 6: Final answer
    x = 577,083.60

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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.