Home / 828,673.80-1,243,010.70-429,436.95

Finding the Fourth Proportional to 828,673.80, 1,243,010.70 and 429,436.95

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Solution

The fourth proportional to 828,673.80, 1,243,010.70 and 429,436.95 is: 644,155.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    828,673.80 : 1,243,010.70 = 429,436.95 : x
  2. Step 2: Convert to fraction form
    828,673.80/1,243,010.70 = 429,436.95/x
  3. Step 3: Cross multiply
    828,673.80x = 1,243,010.70 × 429,436.95
  4. Step 4: Simplify right side
    828,673.80x = 533,794,723,825.37
  5. Step 5: Solve for x
    x = 533,794,723,825.37/828,673.80
  6. Step 6: Final answer
    x = 644,155.43

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1.5x scale

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.