Home / 611,386.38-916,784.53-256,305.06

Finding the Fourth Proportional to 611,386.38, 916,784.53 and 256,305.06

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Solution

The fourth proportional to 611,386.38, 916,784.53 and 256,305.06 is: 384,333.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,386.38 : 916,784.53 = 256,305.06 : x
  2. Step 2: Convert to fraction form
    611,386.38/916,784.53 = 256,305.06/x
  3. Step 3: Cross multiply
    611,386.38x = 916,784.53 × 256,305.06
  4. Step 4: Simplify right side
    611,386.38x = 234,976,513,327.96
  5. Step 5: Solve for x
    x = 234,976,513,327.96/611,386.38
  6. Step 6: Final answer
    x = 384,333.90

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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.