Home / 916,426.40-1,374,985.20-443,530.40

Finding the Fourth Proportional to 916,426.40, 1,374,985.20 and 443,530.40

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Solution

The fourth proportional to 916,426.40, 1,374,985.20 and 443,530.40 is: 665,462.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    916,426.40 : 1,374,985.20 = 443,530.40 : x
  2. Step 2: Convert to fraction form
    916,426.40/1,374,985.20 = 443,530.40/x
  3. Step 3: Cross multiply
    916,426.40x = 1,374,985.20 × 443,530.40
  4. Step 4: Simplify right side
    916,426.40x = 609,847,735,750.08
  5. Step 5: Solve for x
    x = 609,847,735,750.08/916,426.40
  6. Step 6: Final answer
    x = 665,462.86

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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.