Home / 638,428.35-881,025.33-351,948.45

Finding the Fourth Proportional to 638,428.35, 881,025.33 and 351,948.45

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Solution

The fourth proportional to 638,428.35, 881,025.33 and 351,948.45 is: 485,685.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,428.35 : 881,025.33 = 351,948.45 : x
  2. Step 2: Convert to fraction form
    638,428.35/881,025.33 = 351,948.45/x
  3. Step 3: Cross multiply
    638,428.35x = 881,025.33 × 351,948.45
  4. Step 4: Simplify right side
    638,428.35x = 310,075,499,304.24
  5. Step 5: Solve for x
    x = 310,075,499,304.24/638,428.35
  6. Step 6: Final answer
    x = 485,685.67

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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.