Home / 638,279.37-880,831.67-351,810.45

Finding the Fourth Proportional to 638,279.37, 880,831.67 and 351,810.45

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Solution

The fourth proportional to 638,279.37, 880,831.67 and 351,810.45 is: 485,501.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,279.37 : 880,831.67 = 351,810.45 : x
  2. Step 2: Convert to fraction form
    638,279.37/880,831.67 = 351,810.45/x
  3. Step 3: Cross multiply
    638,279.37x = 880,831.67 × 351,810.45
  4. Step 4: Simplify right side
    638,279.37x = 309,885,784,437.90
  5. Step 5: Solve for x
    x = 309,885,784,437.90/638,279.37
  6. Step 6: Final answer
    x = 485,501.80

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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.