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Finding the Fourth Proportional to 879,900.80, 1,214,263.12 and 477,492.80

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Solution

The fourth proportional to 879,900.80, 1,214,263.12 and 477,492.80 is: 658,940.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    879,900.80 : 1,214,263.12 = 477,492.80 : x
  2. Step 2: Convert to fraction form
    879,900.80/1,214,263.12 = 477,492.80/x
  3. Step 3: Cross multiply
    879,900.80x = 1,214,263.12 × 477,492.80
  4. Step 4: Simplify right side
    879,900.80x = 579,801,894,718.07
  5. Step 5: Solve for x
    x = 579,801,894,718.07/879,900.80
  6. Step 6: Final answer
    x = 658,940.07

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Double scale
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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.