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Finding the Fourth Proportional to 537,853.20, 805,030.20 and 418,880.40

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Solution

The fourth proportional to 537,853.20, 805,030.20 and 418,880.40 is: 626,958.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    537,853.20 : 805,030.20 = 418,880.40 : x
  2. Step 2: Convert to fraction form
    537,853.20/805,030.20 = 418,880.40/x
  3. Step 3: Cross multiply
    537,853.20x = 805,030.20 × 418,880.40
  4. Step 4: Simplify right side
    537,853.20x = 337,211,372,188.08
  5. Step 5: Solve for x
    x = 337,211,372,188.08/537,853.20
  6. Step 6: Final answer
    x = 626,958.01

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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.