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Finding the Fourth Proportional to 644,089.28, 888,870.96 and 357,609.38

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Solution

The fourth proportional to 644,089.28, 888,870.96 and 357,609.38 is: 493,516.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,089.28 : 888,870.96 = 357,609.38 : x
  2. Step 2: Convert to fraction form
    644,089.28/888,870.96 = 357,609.38/x
  3. Step 3: Cross multiply
    644,089.28x = 888,870.96 × 357,609.38
  4. Step 4: Simplify right side
    644,089.28x = 317,868,588,461.25
  5. Step 5: Solve for x
    x = 317,868,588,461.25/644,089.28
  6. Step 6: Final answer
    x = 493,516.35

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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.