Home / 928,635.71-1,281,583.01-515,307.69

Finding the Fourth Proportional to 928,635.71, 1,281,583.01 and 515,307.69

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Solution

The fourth proportional to 928,635.71, 1,281,583.01 and 515,307.69 is: 711,161.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    928,635.71 : 1,281,583.01 = 515,307.69 : x
  2. Step 2: Convert to fraction form
    928,635.71/1,281,583.01 = 515,307.69/x
  3. Step 3: Cross multiply
    928,635.71x = 1,281,583.01 × 515,307.69
  4. Step 4: Simplify right side
    928,635.71x = 660,409,581,714.62
  5. Step 5: Solve for x
    x = 660,409,581,714.62/928,635.71
  6. Step 6: Final answer
    x = 711,161.09

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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.