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Finding the Fourth Proportional to 665,860,362.88, 918,866,547.84 and 368,484,712.96

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Solution

The fourth proportional to 665,860,362.88, 918,866,547.84 and 368,484,712.96 is: 508,497,419.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,860,362.88 : 918,866,547.84 = 368,484,712.96 : x
  2. Step 2: Convert to fraction form
    665,860,362.88/918,866,547.84 = 368,484,712.96/x
  3. Step 3: Cross multiply
    665,860,362.88x = 918,866,547.84 × 368,484,712.96
  4. Step 4: Simplify right side
    665,860,362.88x = 338,588,276,129,368,512
  5. Step 5: Solve for x
    x = 338,588,276,129,368,512/665,860,362.88
  6. Step 6: Final answer
    x = 508,497,419.29

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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.