Home / 389,621.80-584,432.70-346,319.20

Finding the Fourth Proportional to 389,621.80, 584,432.70 and 346,319.20

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Solution

The fourth proportional to 389,621.80, 584,432.70 and 346,319.20 is: 519,478.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,621.80 : 584,432.70 = 346,319.20 : x
  2. Step 2: Convert to fraction form
    389,621.80/584,432.70 = 346,319.20/x
  3. Step 3: Cross multiply
    389,621.80x = 584,432.70 × 346,319.20
  4. Step 4: Simplify right side
    389,621.80x = 202,400,265,117.84
  5. Step 5: Solve for x
    x = 202,400,265,117.84/389,621.80
  6. Step 6: Final answer
    x = 519,478.80

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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.