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Finding the Fourth Proportional to 908,387.10, 1,365,533.10 and 778,479.30

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Solution

The fourth proportional to 908,387.10, 1,365,533.10 and 778,479.30 is: 1,170,249.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    908,387.10 : 1,365,533.10 = 778,479.30 : x
  2. Step 2: Convert to fraction form
    908,387.10/1,365,533.10 = 778,479.30/x
  3. Step 3: Cross multiply
    908,387.10x = 1,365,533.10 × 778,479.30
  4. Step 4: Simplify right side
    908,387.10x = 1,063,039,251,814.83
  5. Step 5: Solve for x
    x = 1,063,039,251,814.83/908,387.10
  6. Step 6: Final answer
    x = 1,170,249.17

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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.