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Finding the Fourth Proportional to 6,357,778.28, 8,796,837.96 and 5,543,678.40

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Solution

The fourth proportional to 6,357,778.28, 8,796,837.96 and 5,543,678.40 is: 7,670,421.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,357,778.28 : 8,796,837.96 = 5,543,678.40 : x
  2. Step 2: Convert to fraction form
    6,357,778.28/8,796,837.96 = 5,543,678.40/x
  3. Step 3: Cross multiply
    6,357,778.28x = 8,796,837.96 × 5,543,678.40
  4. Step 4: Simplify right side
    6,357,778.28x = 48,766,840,587,152.07
  5. Step 5: Solve for x
    x = 48,766,840,587,152.07/6,357,778.28
  6. Step 6: Final answer
    x = 7,670,421.72

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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.