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Finding the Fourth Proportional to 666,928,300.28, 920,366,458.29 and 369,575,509.37

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Solution

The fourth proportional to 666,928,300.28, 920,366,458.29 and 369,575,509.37 is: 510,017,197.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,928,300.28 : 920,366,458.29 = 369,575,509.37 : x
  2. Step 2: Convert to fraction form
    666,928,300.28/920,366,458.29 = 369,575,509.37/x
  3. Step 3: Cross multiply
    666,928,300.28x = 920,366,458.29 × 369,575,509.37
  4. Step 4: Simplify right side
    666,928,300.28x = 340,144,902,624,987,776
  5. Step 5: Solve for x
    x = 340,144,902,624,987,776/666,928,300.28
  6. Step 6: Final answer
    x = 510,017,197.48

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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.