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Finding the Fourth Proportional to 651,078.30, 976,289.40 and 384,920.40

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Solution

The fourth proportional to 651,078.30, 976,289.40 and 384,920.40 is: 577,186.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    651,078.30 : 976,289.40 = 384,920.40 : x
  2. Step 2: Convert to fraction form
    651,078.30/976,289.40 = 384,920.40/x
  3. Step 3: Cross multiply
    651,078.30x = 976,289.40 × 384,920.40
  4. Step 4: Simplify right side
    651,078.30x = 375,793,706,363.76
  5. Step 5: Solve for x
    x = 375,793,706,363.76/651,078.30
  6. Step 6: Final answer
    x = 577,186.66

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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.