Home / 687,531.58-948,779.28-381,590.01

Finding the Fourth Proportional to 687,531.58, 948,779.28 and 381,590.01

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Solution

The fourth proportional to 687,531.58, 948,779.28 and 381,590.01 is: 526,586.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,531.58 : 948,779.28 = 381,590.01 : x
  2. Step 2: Convert to fraction form
    687,531.58/948,779.28 = 381,590.01/x
  3. Step 3: Cross multiply
    687,531.58x = 948,779.28 × 381,590.01
  4. Step 4: Simplify right side
    687,531.58x = 362,044,694,942.99
  5. Step 5: Solve for x
    x = 362,044,694,942.99/687,531.58
  6. Step 6: Final answer
    x = 526,586.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.