Home / 687,074.70-1,030,612.05-509,927.70

Finding the Fourth Proportional to 687,074.70, 1,030,612.05 and 509,927.70

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Solution

The fourth proportional to 687,074.70, 1,030,612.05 and 509,927.70 is: 764,891.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,074.70 : 1,030,612.05 = 509,927.70 : x
  2. Step 2: Convert to fraction form
    687,074.70/1,030,612.05 = 509,927.70/x
  3. Step 3: Cross multiply
    687,074.70x = 1,030,612.05 × 509,927.70
  4. Step 4: Simplify right side
    687,074.70x = 525,537,632,248.79
  5. Step 5: Solve for x
    x = 525,537,632,248.79/687,074.70
  6. Step 6: Final answer
    x = 764,891.55

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.