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Finding the Fourth Proportional to 879,454.80, 1,318,210.20 and 346,798.80

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Solution

The fourth proportional to 879,454.80, 1,318,210.20 and 346,798.80 is: 519,814.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    879,454.80 : 1,318,210.20 = 346,798.80 : x
  2. Step 2: Convert to fraction form
    879,454.80/1,318,210.20 = 346,798.80/x
  3. Step 3: Cross multiply
    879,454.80x = 1,318,210.20 × 346,798.80
  4. Step 4: Simplify right side
    879,454.80x = 457,153,715,507.76
  5. Step 5: Solve for x
    x = 457,153,715,507.76/879,454.80
  6. Step 6: Final answer
    x = 519,814.91

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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.