Home / 1,291,808.40-1,937,482.20-817,645.20

Finding the Fourth Proportional to 1,291,808.40, 1,937,482.20 and 817,645.20

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Solution

The fourth proportional to 1,291,808.40, 1,937,482.20 and 817,645.20 is: 1,226,321.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,291,808.40 : 1,937,482.20 = 817,645.20 : x
  2. Step 2: Convert to fraction form
    1,291,808.40/1,937,482.20 = 817,645.20/x
  3. Step 3: Cross multiply
    1,291,808.40x = 1,937,482.20 × 817,645.20
  4. Step 4: Simplify right side
    1,291,808.40x = 1,584,173,020,915.44
  5. Step 5: Solve for x
    x = 1,584,173,020,915.44/1,291,808.40
  6. Step 6: Final answer
    x = 1,226,321.97

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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.