Home / 389,623.30-584,434.95-346,320.70

Finding the Fourth Proportional to 389,623.30, 584,434.95 and 346,320.70

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Solution

The fourth proportional to 389,623.30, 584,434.95 and 346,320.70 is: 519,481.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,623.30 : 584,434.95 = 346,320.70 : x
  2. Step 2: Convert to fraction form
    389,623.30/584,434.95 = 346,320.70/x
  3. Step 3: Cross multiply
    389,623.30x = 584,434.95 × 346,320.70
  4. Step 4: Simplify right side
    389,623.30x = 202,401,920,988.47
  5. Step 5: Solve for x
    x = 202,401,920,988.47/389,623.30
  6. Step 6: Final answer
    x = 519,481.05

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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.