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Finding the Fourth Proportional to 478,842.58, 660,807.15 and 263,990.35

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Solution

The fourth proportional to 478,842.58, 660,807.15 and 263,990.35 is: 364,309.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,842.58 : 660,807.15 = 263,990.35 : x
  2. Step 2: Convert to fraction form
    478,842.58/660,807.15 = 263,990.35/x
  3. Step 3: Cross multiply
    478,842.58x = 660,807.15 × 263,990.35
  4. Step 4: Simplify right side
    478,842.58x = 174,446,710,811.00
  5. Step 5: Solve for x
    x = 174,446,710,811.00/478,842.58
  6. Step 6: Final answer
    x = 364,309.10

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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.