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Finding the Fourth Proportional to 558,984, 771,411.60 and 304,349.04

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Solution

The fourth proportional to 558,984, 771,411.60 and 304,349.04 is: 420,009.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    558,984 : 771,411.60 = 304,349.04 : x
  2. Step 2: Convert to fraction form
    558,984/771,411.60 = 304,349.04/x
  3. Step 3: Cross multiply
    558,984x = 771,411.60 × 304,349.04
  4. Step 4: Simplify right side
    558,984x = 234,778,379,904.86
  5. Step 5: Solve for x
    x = 234,778,379,904.86/558,984
  6. Step 6: Final answer
    x = 420,009.12

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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.