Home / 921,191.90-1,382,564.25-389,094.80

Finding the Fourth Proportional to 921,191.90, 1,382,564.25 and 389,094.80

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Solution

The fourth proportional to 921,191.90, 1,382,564.25 and 389,094.80 is: 583,970.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    921,191.90 : 1,382,564.25 = 389,094.80 : x
  2. Step 2: Convert to fraction form
    921,191.90/1,382,564.25 = 389,094.80/x
  3. Step 3: Cross multiply
    921,191.90x = 1,382,564.25 × 389,094.80
  4. Step 4: Simplify right side
    921,191.90x = 537,948,553,428.08
  5. Step 5: Solve for x
    x = 537,948,553,428.08/921,191.90
  6. Step 6: Final answer
    x = 583,970.13

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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.