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Finding the Fourth Proportional to 455,779.80, 683,669.70 and 322,810.20

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Solution

The fourth proportional to 455,779.80, 683,669.70 and 322,810.20 is: 484,215.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,779.80 : 683,669.70 = 322,810.20 : x
  2. Step 2: Convert to fraction form
    455,779.80/683,669.70 = 322,810.20/x
  3. Step 3: Cross multiply
    455,779.80x = 683,669.70 × 322,810.20
  4. Step 4: Simplify right side
    455,779.80x = 220,695,552,590.94
  5. Step 5: Solve for x
    x = 220,695,552,590.94/455,779.80
  6. Step 6: Final answer
    x = 484,215.30

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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.