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Finding the Fourth Proportional to 550,421.78, 759,259.46 and 346,148.69

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Solution

The fourth proportional to 550,421.78, 759,259.46 and 346,148.69 is: 477,482.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    550,421.78 : 759,259.46 = 346,148.69 : x
  2. Step 2: Convert to fraction form
    550,421.78/759,259.46 = 346,148.69/x
  3. Step 3: Cross multiply
    550,421.78x = 759,259.46 × 346,148.69
  4. Step 4: Simplify right side
    550,421.78x = 262,816,667,449.11
  5. Step 5: Solve for x
    x = 262,816,667,449.11/550,421.78
  6. Step 6: Final answer
    x = 477,482.32

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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.