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Finding the Fourth Proportional to 1,557,782.80, 2,184,045.20 and 1,557,782.80

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Solution

The fourth proportional to 1,557,782.80, 2,184,045.20 and 1,557,782.80 is: 2,184,045.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,557,782.80 : 2,184,045.20 = 1,557,782.80 : x
  2. Step 2: Convert to fraction form
    1,557,782.80/2,184,045.20 = 1,557,782.80/x
  3. Step 3: Cross multiply
    1,557,782.80x = 2,184,045.20 × 1,557,782.80
  4. Step 4: Simplify right side
    1,557,782.80x = 3,402,268,046,982.56
  5. Step 5: Solve for x
    x = 3,402,268,046,982.56/1,557,782.80
  6. Step 6: Final answer
    x = 2,184,045.20

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.