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Finding the Fourth Proportional to 879,900.90, 1,214,263.25 and 477,492.90

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Solution

The fourth proportional to 879,900.90, 1,214,263.25 and 477,492.90 is: 658,940.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    879,900.90 : 1,214,263.25 = 477,492.90 : x
  2. Step 2: Convert to fraction form
    879,900.90/1,214,263.25 = 477,492.90/x
  3. Step 3: Cross multiply
    879,900.90x = 1,214,263.25 × 477,492.90
  4. Step 4: Simplify right side
    879,900.90x = 579,802,080,605.93
  5. Step 5: Solve for x
    x = 579,802,080,605.93/879,900.90
  6. Step 6: Final answer
    x = 658,940.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.