Home / 645,924.50-891,368.73-355,529.85

Finding the Fourth Proportional to 645,924.50, 891,368.73 and 355,529.85

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Solution

The fourth proportional to 645,924.50, 891,368.73 and 355,529.85 is: 490,627.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,924.50 : 891,368.73 = 355,529.85 : x
  2. Step 2: Convert to fraction form
    645,924.50/891,368.73 = 355,529.85/x
  3. Step 3: Cross multiply
    645,924.50x = 891,368.73 × 355,529.85
  4. Step 4: Simplify right side
    645,924.50x = 316,908,190,871.59
  5. Step 5: Solve for x
    x = 316,908,190,871.59/645,924.50
  6. Step 6: Final answer
    x = 490,627.30

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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.