Home / 648,009.60-972,014.40-514,165.20

Finding the Fourth Proportional to 648,009.60, 972,014.40 and 514,165.20

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Solution

The fourth proportional to 648,009.60, 972,014.40 and 514,165.20 is: 771,247.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,009.60 : 972,014.40 = 514,165.20 : x
  2. Step 2: Convert to fraction form
    648,009.60/972,014.40 = 514,165.20/x
  3. Step 3: Cross multiply
    648,009.60x = 972,014.40 × 514,165.20
  4. Step 4: Simplify right side
    648,009.60x = 499,775,978,378.88
  5. Step 5: Solve for x
    x = 499,775,978,378.88/648,009.60
  6. Step 6: Final answer
    x = 771,247.80

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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.