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Finding the Fourth Proportional to 628,809.66, 867,775.50 and 342,334.62

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Solution

The fourth proportional to 628,809.66, 867,775.50 and 342,334.62 is: 472,431.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,809.66 : 867,775.50 = 342,334.62 : x
  2. Step 2: Convert to fraction form
    628,809.66/867,775.50 = 342,334.62/x
  3. Step 3: Cross multiply
    628,809.66x = 867,775.50 × 342,334.62
  4. Step 4: Simplify right side
    628,809.66x = 297,069,596,037.81
  5. Step 5: Solve for x
    x = 297,069,596,037.81/628,809.66
  6. Step 6: Final answer
    x = 472,431.67

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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.