Home / 920,138.74-1,269,849.36-557,594.35

Finding the Fourth Proportional to 920,138.74, 1,269,849.36 and 557,594.35

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Solution

The fourth proportional to 920,138.74, 1,269,849.36 and 557,594.35 is: 769,515.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,138.74 : 1,269,849.36 = 557,594.35 : x
  2. Step 2: Convert to fraction form
    920,138.74/1,269,849.36 = 557,594.35/x
  3. Step 3: Cross multiply
    920,138.74x = 1,269,849.36 × 557,594.35
  4. Step 4: Simplify right side
    920,138.74x = 708,060,828,487.12
  5. Step 5: Solve for x
    x = 708,060,828,487.12/920,138.74
  6. Step 6: Final answer
    x = 769,515.29

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Double scale
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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.