Home / 786,445.12-1,085,283.87-442,280.96

Finding the Fourth Proportional to 786,445.12, 1,085,283.87 and 442,280.96

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Solution

The fourth proportional to 786,445.12, 1,085,283.87 and 442,280.96 is: 610,341.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    786,445.12 : 1,085,283.87 = 442,280.96 : x
  2. Step 2: Convert to fraction form
    786,445.12/1,085,283.87 = 442,280.96/x
  3. Step 3: Cross multiply
    786,445.12x = 1,085,283.87 × 442,280.96
  4. Step 4: Simplify right side
    786,445.12x = 480,000,388,880.96
  5. Step 5: Solve for x
    x = 480,000,388,880.96/786,445.12
  6. Step 6: Final answer
    x = 610,341.87

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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.