Home / 439,819.80-658,952.10-390,053.40

Finding the Fourth Proportional to 439,819.80, 658,952.10 and 390,053.40

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Solution

The fourth proportional to 439,819.80, 658,952.10 and 390,053.40 is: 584,390.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,819.80 : 658,952.10 = 390,053.40 : x
  2. Step 2: Convert to fraction form
    439,819.80/658,952.10 = 390,053.40/x
  3. Step 3: Cross multiply
    439,819.80x = 658,952.10 × 390,053.40
  4. Step 4: Simplify right side
    439,819.80x = 257,026,507,042.14
  5. Step 5: Solve for x
    x = 257,026,507,042.14/439,819.80
  6. Step 6: Final answer
    x = 584,390.49

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1.5x scale

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.