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Finding the Fourth Proportional to 536,492, 740,378.40 and 307,091.36

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Solution

The fourth proportional to 536,492, 740,378.40 and 307,091.36 is: 423,797.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    536,492 : 740,378.40 = 307,091.36 : x
  2. Step 2: Convert to fraction form
    536,492/740,378.40 = 307,091.36/x
  3. Step 3: Cross multiply
    536,492x = 740,378.40 × 307,091.36
  4. Step 4: Simplify right side
    536,492x = 227,363,809,770.62
  5. Step 5: Solve for x
    x = 227,363,809,770.62/536,492
  6. Step 6: Final answer
    x = 423,797.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.