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Finding the Fourth Proportional to 520,779.60, 781,212.60 and 165,783.60

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Solution

The fourth proportional to 520,779.60, 781,212.60 and 165,783.60 is: 248,689.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,779.60 : 781,212.60 = 165,783.60 : x
  2. Step 2: Convert to fraction form
    520,779.60/781,212.60 = 165,783.60/x
  3. Step 3: Cross multiply
    520,779.60x = 781,212.60 × 165,783.60
  4. Step 4: Simplify right side
    520,779.60x = 129,512,237,193.36
  5. Step 5: Solve for x
    x = 129,512,237,193.36/520,779.60
  6. Step 6: Final answer
    x = 248,689.15

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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.