Home / 985,168.72-1,359,505.64-555,445.12

Finding the Fourth Proportional to 985,168.72, 1,359,505.64 and 555,445.12

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Solution

The fourth proportional to 985,168.72, 1,359,505.64 and 555,445.12 is: 766,498.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    985,168.72 : 1,359,505.64 = 555,445.12 : x
  2. Step 2: Convert to fraction form
    985,168.72/1,359,505.64 = 555,445.12/x
  3. Step 3: Cross multiply
    985,168.72x = 1,359,505.64 × 555,445.12
  4. Step 4: Simplify right side
    985,168.72x = 755,130,773,350.48
  5. Step 5: Solve for x
    x = 755,130,773,350.48/985,168.72
  6. Step 6: Final answer
    x = 766,498.93

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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.