Home / 712,018.44-982,585.74-389,730.16

Finding the Fourth Proportional to 712,018.44, 982,585.74 and 389,730.16

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Solution

The fourth proportional to 712,018.44, 982,585.74 and 389,730.16 is: 537,827.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,018.44 : 982,585.74 = 389,730.16 : x
  2. Step 2: Convert to fraction form
    712,018.44/982,585.74 = 389,730.16/x
  3. Step 3: Cross multiply
    712,018.44x = 982,585.74 × 389,730.16
  4. Step 4: Simplify right side
    712,018.44x = 382,943,297,663.92
  5. Step 5: Solve for x
    x = 382,943,297,663.92/712,018.44
  6. Step 6: Final answer
    x = 537,827.78

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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.