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Finding the Fourth Proportional to 520,407.44, 780,663.12 and 141,334.16

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Solution

The fourth proportional to 520,407.44, 780,663.12 and 141,334.16 is: 212,015.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,407.44 : 780,663.12 = 141,334.16 : x
  2. Step 2: Convert to fraction form
    520,407.44/780,663.12 = 141,334.16/x
  3. Step 3: Cross multiply
    520,407.44x = 780,663.12 × 141,334.16
  4. Step 4: Simplify right side
    520,407.44x = 110,334,366,308.18
  5. Step 5: Solve for x
    x = 110,334,366,308.18/520,407.44
  6. Step 6: Final answer
    x = 212,015.35

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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.