Home / 520,090.20-780,068.34-165,108.24

Finding the Fourth Proportional to 520,090.20, 780,068.34 and 165,108.24

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Solution

The fourth proportional to 520,090.20, 780,068.34 and 165,108.24 is: 247,641.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,090.20 : 780,068.34 = 165,108.24 : x
  2. Step 2: Convert to fraction form
    520,090.20/780,068.34 = 165,108.24/x
  3. Step 3: Cross multiply
    520,090.20x = 780,068.34 × 165,108.24
  4. Step 4: Simplify right side
    520,090.20x = 128,795,710,697.12
  5. Step 5: Solve for x
    x = 128,795,710,697.12/520,090.20
  6. Step 6: Final answer
    x = 247,641.10

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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.