Home / 913,378.55-1,260,442.49-499,913.33

Finding the Fourth Proportional to 913,378.55, 1,260,442.49 and 499,913.33

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Solution

The fourth proportional to 913,378.55, 1,260,442.49 and 499,913.33 is: 689,869.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    913,378.55 : 1,260,442.49 = 499,913.33 : x
  2. Step 2: Convert to fraction form
    913,378.55/1,260,442.49 = 499,913.33/x
  3. Step 3: Cross multiply
    913,378.55x = 1,260,442.49 × 499,913.33
  4. Step 4: Simplify right side
    913,378.55x = 630,111,993,647.61
  5. Step 5: Solve for x
    x = 630,111,993,647.61/913,378.55
  6. Step 6: Final answer
    x = 689,869.49

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.