Home / 693,501.76-957,021.12-387,582.40

Finding the Fourth Proportional to 693,501.76, 957,021.12 and 387,582.40

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Solution

The fourth proportional to 693,501.76, 957,021.12 and 387,582.40 is: 534,857.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,501.76 : 957,021.12 = 387,582.40 : x
  2. Step 2: Convert to fraction form
    693,501.76/957,021.12 = 387,582.40/x
  3. Step 3: Cross multiply
    693,501.76x = 957,021.12 × 387,582.40
  4. Step 4: Simplify right side
    693,501.76x = 370,924,542,540.29
  5. Step 5: Solve for x
    x = 370,924,542,540.29/693,501.76
  6. Step 6: Final answer
    x = 534,857.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.