Home / 985,157.72-1,359,490.50-555,434.12

Finding the Fourth Proportional to 985,157.72, 1,359,490.50 and 555,434.12

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Solution

The fourth proportional to 985,157.72, 1,359,490.50 and 555,434.12 is: 766,483.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    985,157.72 : 1,359,490.50 = 555,434.12 : x
  2. Step 2: Convert to fraction form
    985,157.72/1,359,490.50 = 555,434.12/x
  3. Step 3: Cross multiply
    985,157.72x = 1,359,490.50 × 555,434.12
  4. Step 4: Simplify right side
    985,157.72x = 755,107,409,515.86
  5. Step 5: Solve for x
    x = 755,107,409,515.86/985,157.72
  6. Step 6: Final answer
    x = 766,483.78

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Double scale
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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.