Home / 786,783.72-1,085,749.86-442,593.64

Finding the Fourth Proportional to 786,783.72, 1,085,749.86 and 442,593.64

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Solution

The fourth proportional to 786,783.72, 1,085,749.86 and 442,593.64 is: 610,772.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    786,783.72 : 1,085,749.86 = 442,593.64 : x
  2. Step 2: Convert to fraction form
    786,783.72/1,085,749.86 = 442,593.64/x
  3. Step 3: Cross multiply
    786,783.72x = 1,085,749.86 × 442,593.64
  4. Step 4: Simplify right side
    786,783.72x = 480,545,982,666.89
  5. Step 5: Solve for x
    x = 480,545,982,666.89/786,783.72
  6. Step 6: Final answer
    x = 610,772.66

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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.