Home / 920,205.18-1,269,587.79-557,513.10

Finding the Fourth Proportional to 920,205.18, 1,269,587.79 and 557,513.10

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Solution

The fourth proportional to 920,205.18, 1,269,587.79 and 557,513.10 is: 769,189.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,205.18 : 1,269,587.79 = 557,513.10 : x
  2. Step 2: Convert to fraction form
    920,205.18/1,269,587.79 = 557,513.10/x
  3. Step 3: Cross multiply
    920,205.18x = 1,269,587.79 × 557,513.10
  4. Step 4: Simplify right side
    920,205.18x = 707,811,824,525.05
  5. Step 5: Solve for x
    x = 707,811,824,525.05/920,205.18
  6. Step 6: Final answer
    x = 769,189.13

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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.