Home / 712,809.92-983,669.37-386,116.77

Finding the Fourth Proportional to 712,809.92, 983,669.37 and 386,116.77

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Solution

The fourth proportional to 712,809.92, 983,669.37 and 386,116.77 is: 532,836.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,809.92 : 983,669.37 = 386,116.77 : x
  2. Step 2: Convert to fraction form
    712,809.92/983,669.37 = 386,116.77/x
  3. Step 3: Cross multiply
    712,809.92x = 983,669.37 × 386,116.77
  4. Step 4: Simplify right side
    712,809.92x = 379,811,242,133.16
  5. Step 5: Solve for x
    x = 379,811,242,133.16/712,809.92
  6. Step 6: Final answer
    x = 532,836.64

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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.