Home / 712,802.76-1,069,074.94-286,321.40

Finding the Fourth Proportional to 712,802.76, 1,069,074.94 and 286,321.40

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Solution

The fourth proportional to 712,802.76, 1,069,074.94 and 286,321.40 is: 429,430.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,802.76 : 1,069,074.94 = 286,321.40 : x
  2. Step 2: Convert to fraction form
    712,802.76/1,069,074.94 = 286,321.40/x
  3. Step 3: Cross multiply
    712,802.76x = 1,069,074.94 × 286,321.40
  4. Step 4: Simplify right side
    712,802.76x = 306,099,033,525.72
  5. Step 5: Solve for x
    x = 306,099,033,525.72/712,802.76
  6. Step 6: Final answer
    x = 429,430.20

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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.