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Finding the Fourth Proportional to 611,488.20, 917,378.10 and 295,685.40

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Solution

The fourth proportional to 611,488.20, 917,378.10 and 295,685.40 is: 443,598.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,488.20 : 917,378.10 = 295,685.40 : x
  2. Step 2: Convert to fraction form
    611,488.20/917,378.10 = 295,685.40/x
  3. Step 3: Cross multiply
    611,488.20x = 917,378.10 × 295,685.40
  4. Step 4: Simplify right side
    611,488.20x = 271,255,310,449.74
  5. Step 5: Solve for x
    x = 271,255,310,449.74/611,488.20
  6. Step 6: Final answer
    x = 443,598.60

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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.