Home / 912,555.10-1,368,375.81-281,386.90

Finding the Fourth Proportional to 912,555.10, 1,368,375.81 and 281,386.90

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Solution

The fourth proportional to 912,555.10, 1,368,375.81 and 281,386.90 is: 421,939.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    912,555.10 : 1,368,375.81 = 281,386.90 : x
  2. Step 2: Convert to fraction form
    912,555.10/1,368,375.81 = 281,386.90/x
  3. Step 3: Cross multiply
    912,555.10x = 1,368,375.81 × 281,386.90
  4. Step 4: Simplify right side
    912,555.10x = 385,043,027,210.89
  5. Step 5: Solve for x
    x = 385,043,027,210.89/912,555.10
  6. Step 6: Final answer
    x = 421,939.48

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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.