Home / 859,539.71-1,186,196.82-515,431.67

Finding the Fourth Proportional to 859,539.71, 1,186,196.82 and 515,431.67

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Solution

The fourth proportional to 859,539.71, 1,186,196.82 and 515,431.67 is: 711,314.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    859,539.71 : 1,186,196.82 = 515,431.67 : x
  2. Step 2: Convert to fraction form
    859,539.71/1,186,196.82 = 515,431.67/x
  3. Step 3: Cross multiply
    859,539.71x = 1,186,196.82 × 515,431.67
  4. Step 4: Simplify right side
    859,539.71x = 611,403,407,881.29
  5. Step 5: Solve for x
    x = 611,403,407,881.29/859,539.71
  6. Step 6: Final answer
    x = 711,314.91

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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.