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Finding the Fourth Proportional to 652,561,007.40, 978,841,511.10 and 376,684,079.40

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Solution

The fourth proportional to 652,561,007.40, 978,841,511.10 and 376,684,079.40 is: 565,026,119.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    652,561,007.40 : 978,841,511.10 = 376,684,079.40 : x
  2. Step 2: Convert to fraction form
    652,561,007.40/978,841,511.10 = 376,684,079.40/x
  3. Step 3: Cross multiply
    652,561,007.40x = 978,841,511.10 × 376,684,079.40
  4. Step 4: Simplify right side
    652,561,007.40x = 368,714,013,487,208,384
  5. Step 5: Solve for x
    x = 368,714,013,487,208,384/652,561,007.40
  6. Step 6: Final answer
    x = 565,026,119.10

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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.