Home / 920,547.48-1,380,899.59-280,994.87

Finding the Fourth Proportional to 920,547.48, 1,380,899.59 and 280,994.87

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Solution

The fourth proportional to 920,547.48, 1,380,899.59 and 280,994.87 is: 421,516.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,547.48 : 1,380,899.59 = 280,994.87 : x
  2. Step 2: Convert to fraction form
    920,547.48/1,380,899.59 = 280,994.87/x
  3. Step 3: Cross multiply
    920,547.48x = 1,380,899.59 × 280,994.87
  4. Step 4: Simplify right side
    920,547.48x = 388,025,705,105.46
  5. Step 5: Solve for x
    x = 388,025,705,105.46/920,547.48
  6. Step 6: Final answer
    x = 421,516.23

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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.