Home / 712,920.49-1,069,515.60-286,489.51

Finding the Fourth Proportional to 712,920.49, 1,069,515.60 and 286,489.51

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Solution

The fourth proportional to 712,920.49, 1,069,515.60 and 286,489.51 is: 429,788.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,920.49 : 1,069,515.60 = 286,489.51 : x
  2. Step 2: Convert to fraction form
    712,920.49/1,069,515.60 = 286,489.51/x
  3. Step 3: Cross multiply
    712,920.49x = 1,069,515.60 × 286,489.51
  4. Step 4: Simplify right side
    712,920.49x = 306,405,000,181.36
  5. Step 5: Solve for x
    x = 306,405,000,181.36/712,920.49
  6. Step 6: Final answer
    x = 429,788.46

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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.