Home / 988,830.20-1,483,634.10-389,689.40

Finding the Fourth Proportional to 988,830.20, 1,483,634.10 and 389,689.40

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Solution

The fourth proportional to 988,830.20, 1,483,634.10 and 389,689.40 is: 584,687.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    988,830.20 : 1,483,634.10 = 389,689.40 : x
  2. Step 2: Convert to fraction form
    988,830.20/1,483,634.10 = 389,689.40/x
  3. Step 3: Cross multiply
    988,830.20x = 1,483,634.10 × 389,689.40
  4. Step 4: Simplify right side
    988,830.20x = 578,156,482,248.54
  5. Step 5: Solve for x
    x = 578,156,482,248.54/988,830.20
  6. Step 6: Final answer
    x = 584,687.32

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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.