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Finding the Fourth Proportional to 1,018,704, 1,528,056 and 318,288

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Solution

The fourth proportional to 1,018,704, 1,528,056 and 318,288 is: 477,432

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,018,704 : 1,528,056 = 318,288 : x
  2. Step 2: Convert to fraction form
    1,018,704/1,528,056 = 318,288/x
  3. Step 3: Cross multiply
    1,018,704x = 1,528,056 × 318,288
  4. Step 4: Simplify right side
    1,018,704x = 486,361,888,128
  5. Step 5: Solve for x
    x = 486,361,888,128/1,018,704
  6. Step 6: Final answer
    x = 477,432

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.