Home / 639,015.71-953,290.44-621,641.34

Finding the Fourth Proportional to 639,015.71, 953,290.44 and 621,641.34

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Solution

The fourth proportional to 639,015.71, 953,290.44 and 621,641.34 is: 927,371.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,015.71 : 953,290.44 = 621,641.34 : x
  2. Step 2: Convert to fraction form
    639,015.71/953,290.44 = 621,641.34/x
  3. Step 3: Cross multiply
    639,015.71x = 953,290.44 × 621,641.34
  4. Step 4: Simplify right side
    639,015.71x = 592,604,746,530.79
  5. Step 5: Solve for x
    x = 592,604,746,530.79/639,015.71
  6. Step 6: Final answer
    x = 927,371.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.