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Finding the Fourth Proportional to 546,921.80, 819,000.30 and 358,915.40

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Solution

The fourth proportional to 546,921.80, 819,000.30 and 358,915.40 is: 537,465.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    546,921.80 : 819,000.30 = 358,915.40 : x
  2. Step 2: Convert to fraction form
    546,921.80/819,000.30 = 358,915.40/x
  3. Step 3: Cross multiply
    546,921.80x = 819,000.30 × 358,915.40
  4. Step 4: Simplify right side
    546,921.80x = 293,951,820,274.62
  5. Step 5: Solve for x
    x = 293,951,820,274.62/546,921.80
  6. Step 6: Final answer
    x = 537,465.91

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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.