Home / 687,236.86-948,418.81-429,266.54

Finding the Fourth Proportional to 687,236.86, 948,418.81 and 429,266.54

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Solution

The fourth proportional to 687,236.86, 948,418.81 and 429,266.54 is: 592,407.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,236.86 : 948,418.81 = 429,266.54 : x
  2. Step 2: Convert to fraction form
    687,236.86/948,418.81 = 429,266.54/x
  3. Step 3: Cross multiply
    687,236.86x = 948,418.81 × 429,266.54
  4. Step 4: Simplify right side
    687,236.86x = 407,124,461,039.62
  5. Step 5: Solve for x
    x = 407,124,461,039.62/687,236.86
  6. Step 6: Final answer
    x = 592,407.78

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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.