Home / 786,378.18-1,085,166.12-480,966.06

Finding the Fourth Proportional to 786,378.18, 1,085,166.12 and 480,966.06

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Solution

The fourth proportional to 786,378.18, 1,085,166.12 and 480,966.06 is: 663,711.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    786,378.18 : 1,085,166.12 = 480,966.06 : x
  2. Step 2: Convert to fraction form
    786,378.18/1,085,166.12 = 480,966.06/x
  3. Step 3: Cross multiply
    786,378.18x = 1,085,166.12 × 480,966.06
  4. Step 4: Simplify right side
    786,378.18x = 521,928,073,181.89
  5. Step 5: Solve for x
    x = 521,928,073,181.89/786,378.18
  6. Step 6: Final answer
    x = 663,711.29

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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.