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Finding the Fourth Proportional to 616,246.20, 924,369.30 and 427,289.40

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Solution

The fourth proportional to 616,246.20, 924,369.30 and 427,289.40 is: 640,934.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    616,246.20 : 924,369.30 = 427,289.40 : x
  2. Step 2: Convert to fraction form
    616,246.20/924,369.30 = 427,289.40/x
  3. Step 3: Cross multiply
    616,246.20x = 924,369.30 × 427,289.40
  4. Step 4: Simplify right side
    616,246.20x = 394,973,203,575.42
  5. Step 5: Solve for x
    x = 394,973,203,575.42/616,246.20
  6. Step 6: Final answer
    x = 640,934.10

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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.