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Finding the Fourth Proportional to 520,028.70, 780,043.05 and 295,302.30

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Solution

The fourth proportional to 520,028.70, 780,043.05 and 295,302.30 is: 442,953.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,028.70 : 780,043.05 = 295,302.30 : x
  2. Step 2: Convert to fraction form
    520,028.70/780,043.05 = 295,302.30/x
  3. Step 3: Cross multiply
    520,028.70x = 780,043.05 × 295,302.30
  4. Step 4: Simplify right side
    520,028.70x = 230,348,506,764.02
  5. Step 5: Solve for x
    x = 230,348,506,764.02/520,028.70
  6. Step 6: Final answer
    x = 442,953.45

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.