Home / 660,184,714.80-990,277,072.20-427,732,421.40

Finding the Fourth Proportional to 660,184,714.80, 990,277,072.20 and 427,732,421.40

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Solution

The fourth proportional to 660,184,714.80, 990,277,072.20 and 427,732,421.40 is: 641,598,632.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,184,714.80 : 990,277,072.20 = 427,732,421.40 : x
  2. Step 2: Convert to fraction form
    660,184,714.80/990,277,072.20 = 427,732,421.40/x
  3. Step 3: Cross multiply
    660,184,714.80x = 990,277,072.20 × 427,732,421.40
  4. Step 4: Simplify right side
    660,184,714.80x = 423,573,609,949,008,640
  5. Step 5: Solve for x
    x = 423,573,609,949,008,640/660,184,714.80
  6. Step 6: Final answer
    x = 641,598,632.10

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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.