Home / 786,442.47-1,085,329.85-442,386.70

Finding the Fourth Proportional to 786,442.47, 1,085,329.85 and 442,386.70

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Solution

The fourth proportional to 786,442.47, 1,085,329.85 and 442,386.70 is: 610,515.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    786,442.47 : 1,085,329.85 = 442,386.70 : x
  2. Step 2: Convert to fraction form
    786,442.47/1,085,329.85 = 442,386.70/x
  3. Step 3: Cross multiply
    786,442.47x = 1,085,329.85 × 442,386.70
  4. Step 4: Simplify right side
    786,442.47x = 480,135,491,028.60
  5. Step 5: Solve for x
    x = 480,135,491,028.60/786,442.47
  6. Step 6: Final answer
    x = 610,515.72

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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.