Home / 712,939.20-1,069,408.80-447,518.40

Finding the Fourth Proportional to 712,939.20, 1,069,408.80 and 447,518.40

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Solution

The fourth proportional to 712,939.20, 1,069,408.80 and 447,518.40 is: 671,277.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,939.20 : 1,069,408.80 = 447,518.40 : x
  2. Step 2: Convert to fraction form
    712,939.20/1,069,408.80 = 447,518.40/x
  3. Step 3: Cross multiply
    712,939.20x = 1,069,408.80 × 447,518.40
  4. Step 4: Simplify right side
    712,939.20x = 478,580,115,121.92
  5. Step 5: Solve for x
    x = 478,580,115,121.92/712,939.20
  6. Step 6: Final answer
    x = 671,277.60

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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.