Home / 985,000.85-1,359,242.57-571,505.59

Finding the Fourth Proportional to 985,000.85, 1,359,242.57 and 571,505.59

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Solution

The fourth proportional to 985,000.85, 1,359,242.57 and 571,505.59 is: 788,643.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    985,000.85 : 1,359,242.57 = 571,505.59 : x
  2. Step 2: Convert to fraction form
    985,000.85/1,359,242.57 = 571,505.59/x
  3. Step 3: Cross multiply
    985,000.85x = 1,359,242.57 × 571,505.59
  4. Step 4: Simplify right side
    985,000.85x = 776,814,726,920.97
  5. Step 5: Solve for x
    x = 776,814,726,920.97/985,000.85
  6. Step 6: Final answer
    x = 788,643.72

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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.