Home / 712,778.76-1,069,038.97-286,297.36

Finding the Fourth Proportional to 712,778.76, 1,069,038.97 and 286,297.36

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Solution

The fourth proportional to 712,778.76, 1,069,038.97 and 286,297.36 is: 429,394.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,778.76 : 1,069,038.97 = 286,297.36 : x
  2. Step 2: Convert to fraction form
    712,778.76/1,069,038.97 = 286,297.36/x
  3. Step 3: Cross multiply
    712,778.76x = 1,069,038.97 × 286,297.36
  4. Step 4: Simplify right side
    712,778.76x = 306,063,034,848.12
  5. Step 5: Solve for x
    x = 306,063,034,848.12/712,778.76
  6. Step 6: Final answer
    x = 429,394.16

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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.