Home / 712,685.35-983,521.65-406,755.60

Finding the Fourth Proportional to 712,685.35, 983,521.65 and 406,755.60

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Solution

The fourth proportional to 712,685.35, 983,521.65 and 406,755.60 is: 561,331.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,685.35 : 983,521.65 = 406,755.60 : x
  2. Step 2: Convert to fraction form
    712,685.35/983,521.65 = 406,755.60/x
  3. Step 3: Cross multiply
    712,685.35x = 983,521.65 × 406,755.60
  4. Step 4: Simplify right side
    712,685.35x = 400,052,938,858.74
  5. Step 5: Solve for x
    x = 400,052,938,858.74/712,685.35
  6. Step 6: Final answer
    x = 561,331.78

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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.