Home / 1,315,385.60-1,973,596.80-516,531.20

Finding the Fourth Proportional to 1,315,385.60, 1,973,596.80 and 516,531.20

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Solution

The fourth proportional to 1,315,385.60, 1,973,596.80 and 516,531.20 is: 775,000.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,315,385.60 : 1,973,596.80 = 516,531.20 : x
  2. Step 2: Convert to fraction form
    1,315,385.60/1,973,596.80 = 516,531.20/x
  3. Step 3: Cross multiply
    1,315,385.60x = 1,973,596.80 × 516,531.20
  4. Step 4: Simplify right side
    1,315,385.60x = 1,019,424,323,420.16
  5. Step 5: Solve for x
    x = 1,019,424,323,420.16/1,315,385.60
  6. Step 6: Final answer
    x = 775,000.37

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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.