Home / 879,368.79-1,319,148.77-280,189.11

Finding the Fourth Proportional to 879,368.79, 1,319,148.77 and 280,189.11

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Solution

The fourth proportional to 879,368.79, 1,319,148.77 and 280,189.11 is: 420,314.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    879,368.79 : 1,319,148.77 = 280,189.11 : x
  2. Step 2: Convert to fraction form
    879,368.79/1,319,148.77 = 280,189.11/x
  3. Step 3: Cross multiply
    879,368.79x = 1,319,148.77 × 280,189.11
  4. Step 4: Simplify right side
    879,368.79x = 369,611,118,422.95
  5. Step 5: Solve for x
    x = 369,611,118,422.95/879,368.79
  6. Step 6: Final answer
    x = 420,314.12

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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.