Home / 666,928,313.78-920,366,476.92-369,575,522.87

Finding the Fourth Proportional to 666,928,313.78, 920,366,476.92 and 369,575,522.87

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Solution

The fourth proportional to 666,928,313.78, 920,366,476.92 and 369,575,522.87 is: 510,017,216.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,928,313.78 : 920,366,476.92 = 369,575,522.87 : x
  2. Step 2: Convert to fraction form
    666,928,313.78/920,366,476.92 = 369,575,522.87/x
  3. Step 3: Cross multiply
    666,928,313.78x = 920,366,476.92 × 369,575,522.87
  4. Step 4: Simplify right side
    666,928,313.78x = 340,144,921,935,126,976
  5. Step 5: Solve for x
    x = 340,144,921,935,126,976/666,928,313.78
  6. Step 6: Final answer
    x = 510,017,216.11

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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.