Home / 712,821.25-983,451.13-406,677.70

Finding the Fourth Proportional to 712,821.25, 983,451.13 and 406,677.70

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Solution

The fourth proportional to 712,821.25, 983,451.13 and 406,677.70 is: 561,077.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,821.25 : 983,451.13 = 406,677.70 : x
  2. Step 2: Convert to fraction form
    712,821.25/983,451.13 = 406,677.70/x
  3. Step 3: Cross multiply
    712,821.25x = 983,451.13 × 406,677.70
  4. Step 4: Simplify right side
    712,821.25x = 399,947,643,610.80
  5. Step 5: Solve for x
    x = 399,947,643,610.80/712,821.25
  6. Step 6: Final answer
    x = 561,077.05

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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.