Home / 869,383.60-1,302,001.80-425,633.20

Finding the Fourth Proportional to 869,383.60, 1,302,001.80 and 425,633.20

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Solution

The fourth proportional to 869,383.60, 1,302,001.80 and 425,633.20 is: 637,434.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    869,383.60 : 1,302,001.80 = 425,633.20 : x
  2. Step 2: Convert to fraction form
    869,383.60/1,302,001.80 = 425,633.20/x
  3. Step 3: Cross multiply
    869,383.60x = 1,302,001.80 × 425,633.20
  4. Step 4: Simplify right side
    869,383.60x = 554,175,192,539.76
  5. Step 5: Solve for x
    x = 554,175,192,539.76/869,383.60
  6. Step 6: Final answer
    x = 637,434.61

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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.