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Finding the Fourth Proportional to 874,409.40, 1,206,687.47 and 506,957.95

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Solution

The fourth proportional to 874,409.40, 1,206,687.47 and 506,957.95 is: 699,603.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    874,409.40 : 1,206,687.47 = 506,957.95 : x
  2. Step 2: Convert to fraction form
    874,409.40/1,206,687.47 = 506,957.95/x
  3. Step 3: Cross multiply
    874,409.40x = 1,206,687.47 × 506,957.95
  4. Step 4: Simplify right side
    874,409.40x = 611,739,800,048.45
  5. Step 5: Solve for x
    x = 611,739,800,048.45/874,409.40
  6. Step 6: Final answer
    x = 699,603.41

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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.