Home / 928,782.56-1,281,730.64-515,327.10

Finding the Fourth Proportional to 928,782.56, 1,281,730.64 and 515,327.10

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Solution

The fourth proportional to 928,782.56, 1,281,730.64 and 515,327.10 is: 711,157.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    928,782.56 : 1,281,730.64 = 515,327.10 : x
  2. Step 2: Convert to fraction form
    928,782.56/1,281,730.64 = 515,327.10/x
  3. Step 3: Cross multiply
    928,782.56x = 1,281,730.64 × 515,327.10
  4. Step 4: Simplify right side
    928,782.56x = 660,510,531,115.71
  5. Step 5: Solve for x
    x = 660,510,531,115.71/928,782.56
  6. Step 6: Final answer
    x = 711,157.34

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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.