Home / 389,865.47-585,031.48-358,139.39

Finding the Fourth Proportional to 389,865.47, 585,031.48 and 358,139.39

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Solution

The fourth proportional to 389,865.47, 585,031.48 and 358,139.39 is: 537,423.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,865.47 : 585,031.48 = 358,139.39 : x
  2. Step 2: Convert to fraction form
    389,865.47/585,031.48 = 358,139.39/x
  3. Step 3: Cross multiply
    389,865.47x = 585,031.48 × 358,139.39
  4. Step 4: Simplify right side
    389,865.47x = 209,522,813,557.49
  5. Step 5: Solve for x
    x = 209,522,813,557.49/389,865.47
  6. Step 6: Final answer
    x = 537,423.37

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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.