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Finding the Fourth Proportional to 518,477.80, 777,620.70 and 144,423.40

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Solution

The fourth proportional to 518,477.80, 777,620.70 and 144,423.40 is: 216,608.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,477.80 : 777,620.70 = 144,423.40 : x
  2. Step 2: Convert to fraction form
    518,477.80/777,620.70 = 144,423.40/x
  3. Step 3: Cross multiply
    518,477.80x = 777,620.70 × 144,423.40
  4. Step 4: Simplify right side
    518,477.80x = 112,306,625,404.38
  5. Step 5: Solve for x
    x = 112,306,625,404.38/518,477.80
  6. Step 6: Final answer
    x = 216,608.36

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1.5x scale

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.