Home / 887,005.10-1,330,507.65-413,738.30

Finding the Fourth Proportional to 887,005.10, 1,330,507.65 and 413,738.30

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Solution

The fourth proportional to 887,005.10, 1,330,507.65 and 413,738.30 is: 620,607.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    887,005.10 : 1,330,507.65 = 413,738.30 : x
  2. Step 2: Convert to fraction form
    887,005.10/1,330,507.65 = 413,738.30/x
  3. Step 3: Cross multiply
    887,005.10x = 1,330,507.65 × 413,738.30
  4. Step 4: Simplify right side
    887,005.10x = 550,481,973,248.00
  5. Step 5: Solve for x
    x = 550,481,973,248.00/887,005.10
  6. Step 6: Final answer
    x = 620,607.45

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Double scale
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Similar ratio
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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.