Home / 384,975.50-577,421.65-128,779.03

Finding the Fourth Proportional to 384,975.50, 577,421.65 and 128,779.03

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Solution

The fourth proportional to 384,975.50, 577,421.65 and 128,779.03 is: 193,154.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,975.50 : 577,421.65 = 128,779.03 : x
  2. Step 2: Convert to fraction form
    384,975.50/577,421.65 = 128,779.03/x
  3. Step 3: Cross multiply
    384,975.50x = 577,421.65 × 128,779.03
  4. Step 4: Simplify right side
    384,975.50x = 74,359,800,870.75
  5. Step 5: Solve for x
    x = 74,359,800,870.75/384,975.50
  6. Step 6: Final answer
    x = 193,154.63

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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.