Home / 638,400.08-881,045.16-351,976.16

Finding the Fourth Proportional to 638,400.08, 881,045.16 and 351,976.16

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Solution

The fourth proportional to 638,400.08, 881,045.16 and 351,976.16 is: 485,756.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,400.08 : 881,045.16 = 351,976.16 : x
  2. Step 2: Convert to fraction form
    638,400.08/881,045.16 = 351,976.16/x
  3. Step 3: Cross multiply
    638,400.08x = 881,045.16 × 351,976.16
  4. Step 4: Simplify right side
    638,400.08x = 310,106,892,203.39
  5. Step 5: Solve for x
    x = 310,106,892,203.39/638,400.08
  6. Step 6: Final answer
    x = 485,756.35

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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.