Home / 638,440.18-881,053.57-351,970.52

Finding the Fourth Proportional to 638,440.18, 881,053.57 and 351,970.52

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Solution

The fourth proportional to 638,440.18, 881,053.57 and 351,970.52 is: 485,722.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,440.18 : 881,053.57 = 351,970.52 : x
  2. Step 2: Convert to fraction form
    638,440.18/881,053.57 = 351,970.52/x
  3. Step 3: Cross multiply
    638,440.18x = 881,053.57 × 351,970.52
  4. Step 4: Simplify right side
    638,440.18x = 310,104,879,215.45
  5. Step 5: Solve for x
    x = 310,104,879,215.45/638,440.18
  6. Step 6: Final answer
    x = 485,722.69

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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.