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Finding the Fourth Proportional to 637,438.51, 879,401.58 and 379,263.84

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Solution

The fourth proportional to 637,438.51, 879,401.58 and 379,263.84 is: 523,227.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    637,438.51 : 879,401.58 = 379,263.84 : x
  2. Step 2: Convert to fraction form
    637,438.51/879,401.58 = 379,263.84/x
  3. Step 3: Cross multiply
    637,438.51x = 879,401.58 × 379,263.84
  4. Step 4: Simplify right side
    637,438.51x = 333,525,226,032.86
  5. Step 5: Solve for x
    x = 333,525,226,032.86/637,438.51
  6. Step 6: Final answer
    x = 523,227.29

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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.