Home / 1,020,124.80-1,530,770.40-389,491.20

Finding the Fourth Proportional to 1,020,124.80, 1,530,770.40 and 389,491.20

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Solution

The fourth proportional to 1,020,124.80, 1,530,770.40 and 389,491.20 is: 584,459.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,020,124.80 : 1,530,770.40 = 389,491.20 : x
  2. Step 2: Convert to fraction form
    1,020,124.80/1,530,770.40 = 389,491.20/x
  3. Step 3: Cross multiply
    1,020,124.80x = 1,530,770.40 × 389,491.20
  4. Step 4: Simplify right side
    1,020,124.80x = 596,221,600,020.48
  5. Step 5: Solve for x
    x = 596,221,600,020.48/1,020,124.80
  6. Step 6: Final answer
    x = 584,459.47

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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.