Home / 666,698,731.20-920,100,748.14-369,434,218.59

Finding the Fourth Proportional to 666,698,731.20, 920,100,748.14 and 369,434,218.59

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Solution

The fourth proportional to 666,698,731.20, 920,100,748.14 and 369,434,218.59 is: 509,850,529.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,698,731.20 : 920,100,748.14 = 369,434,218.59 : x
  2. Step 2: Convert to fraction form
    666,698,731.20/920,100,748.14 = 369,434,218.59/x
  3. Step 3: Cross multiply
    666,698,731.20x = 920,100,748.14 × 369,434,218.59
  4. Step 4: Simplify right side
    666,698,731.20x = 339,916,700,913,175,296
  5. Step 5: Solve for x
    x = 339,916,700,913,175,296/666,698,731.20
  6. Step 6: Final answer
    x = 509,850,529.19

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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.