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Finding the Fourth Proportional to 647,783.20, 971,444.40 and 292,967.20

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Solution

The fourth proportional to 647,783.20, 971,444.40 and 292,967.20 is: 439,346.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,783.20 : 971,444.40 = 292,967.20 : x
  2. Step 2: Convert to fraction form
    647,783.20/971,444.40 = 292,967.20/x
  3. Step 3: Cross multiply
    647,783.20x = 971,444.40 × 292,967.20
  4. Step 4: Simplify right side
    647,783.20x = 284,601,345,823.68
  5. Step 5: Solve for x
    x = 284,601,345,823.68/647,783.20
  6. Step 6: Final answer
    x = 439,346.60

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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.