Home / 679,664.40-1,018,330.20-442,885.20

Finding the Fourth Proportional to 679,664.40, 1,018,330.20 and 442,885.20

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Solution

The fourth proportional to 679,664.40, 1,018,330.20 and 442,885.20 is: 663,567.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,664.40 : 1,018,330.20 = 442,885.20 : x
  2. Step 2: Convert to fraction form
    679,664.40/1,018,330.20 = 442,885.20/x
  3. Step 3: Cross multiply
    679,664.40x = 1,018,330.20 × 442,885.20
  4. Step 4: Simplify right side
    679,664.40x = 451,003,374,293.04
  5. Step 5: Solve for x
    x = 451,003,374,293.04/679,664.40
  6. Step 6: Final answer
    x = 663,567.75

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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.