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Finding the Fourth Proportional to 554,971.84, 765,854.88 and 300,318.40

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Solution

The fourth proportional to 554,971.84, 765,854.88 and 300,318.40 is: 414,436.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,971.84 : 765,854.88 = 300,318.40 : x
  2. Step 2: Convert to fraction form
    554,971.84/765,854.88 = 300,318.40/x
  3. Step 3: Cross multiply
    554,971.84x = 765,854.88 × 300,318.40
  4. Step 4: Simplify right side
    554,971.84x = 230,000,312,193.79
  5. Step 5: Solve for x
    x = 230,000,312,193.79/554,971.84
  6. Step 6: Final answer
    x = 414,436.00

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.