Home / 389,243.20-583,864.80-370,872.40

Finding the Fourth Proportional to 389,243.20, 583,864.80 and 370,872.40

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Solution

The fourth proportional to 389,243.20, 583,864.80 and 370,872.40 is: 556,308.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,243.20 : 583,864.80 = 370,872.40 : x
  2. Step 2: Convert to fraction form
    389,243.20/583,864.80 = 370,872.40/x
  3. Step 3: Cross multiply
    389,243.20x = 583,864.80 × 370,872.40
  4. Step 4: Simplify right side
    389,243.20x = 216,539,339,651.52
  5. Step 5: Solve for x
    x = 216,539,339,651.52/389,243.20
  6. Step 6: Final answer
    x = 556,308.60

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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.