Home / 1,345,621.84-2,018,440.12-399,000.40

Finding the Fourth Proportional to 1,345,621.84, 2,018,440.12 and 399,000.40

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Solution

The fourth proportional to 1,345,621.84, 2,018,440.12 and 399,000.40 is: 598,502.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,345,621.84 : 2,018,440.12 = 399,000.40 : x
  2. Step 2: Convert to fraction form
    1,345,621.84/2,018,440.12 = 399,000.40/x
  3. Step 3: Cross multiply
    1,345,621.84x = 2,018,440.12 × 399,000.40
  4. Step 4: Simplify right side
    1,345,621.84x = 805,358,415,256.05
  5. Step 5: Solve for x
    x = 805,358,415,256.05/1,345,621.84
  6. Step 6: Final answer
    x = 598,502.78

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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.