Home / 712,782.50-1,069,044.60-286,301.12

Finding the Fourth Proportional to 712,782.50, 1,069,044.60 and 286,301.12

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Solution

The fourth proportional to 712,782.50, 1,069,044.60 and 286,301.12 is: 429,399.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,782.50 : 1,069,044.60 = 286,301.12 : x
  2. Step 2: Convert to fraction form
    712,782.50/1,069,044.60 = 286,301.12/x
  3. Step 3: Cross multiply
    712,782.50x = 1,069,044.60 × 286,301.12
  4. Step 4: Simplify right side
    712,782.50x = 306,068,666,309.95
  5. Step 5: Solve for x
    x = 306,068,666,309.95/712,782.50
  6. Step 6: Final answer
    x = 429,399.80

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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.