Home / 920,838.10-1,384,209.60-656,429.80

Finding the Fourth Proportional to 920,838.10, 1,384,209.60 and 656,429.80

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Solution

The fourth proportional to 920,838.10, 1,384,209.60 and 656,429.80 is: 986,749.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,838.10 : 1,384,209.60 = 656,429.80 : x
  2. Step 2: Convert to fraction form
    920,838.10/1,384,209.60 = 656,429.80/x
  3. Step 3: Cross multiply
    920,838.10x = 1,384,209.60 × 656,429.80
  4. Step 4: Simplify right side
    920,838.10x = 908,636,430,886.08
  5. Step 5: Solve for x
    x = 908,636,430,886.08/920,838.10
  6. Step 6: Final answer
    x = 986,749.39

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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.