Home / 712,388.52-983,189.34-406,394.28

Finding the Fourth Proportional to 712,388.52, 983,189.34 and 406,394.28

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Solution

The fourth proportional to 712,388.52, 983,189.34 and 406,394.28 is: 560,877.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,388.52 : 983,189.34 = 406,394.28 : x
  2. Step 2: Convert to fraction form
    712,388.52/983,189.34 = 406,394.28/x
  3. Step 3: Cross multiply
    712,388.52x = 983,189.34 × 406,394.28
  4. Step 4: Simplify right side
    712,388.52x = 399,562,523,932.98
  5. Step 5: Solve for x
    x = 399,562,523,932.98/712,388.52
  6. Step 6: Final answer
    x = 560,877.26

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Double scale
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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.