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Finding the Fourth Proportional to 556,587.60, 767,796.72 and 395,507.76

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Solution

The fourth proportional to 556,587.60, 767,796.72 and 395,507.76 is: 545,591.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,587.60 : 767,796.72 = 395,507.76 : x
  2. Step 2: Convert to fraction form
    556,587.60/767,796.72 = 395,507.76/x
  3. Step 3: Cross multiply
    556,587.60x = 767,796.72 × 395,507.76
  4. Step 4: Simplify right side
    556,587.60x = 303,669,560,862.55
  5. Step 5: Solve for x
    x = 303,669,560,862.55/556,587.60
  6. Step 6: Final answer
    x = 545,591.67

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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.