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Finding the Fourth Proportional to 613,804,580.20, 920,706,870.30 and 368,916,567.40

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Solution

The fourth proportional to 613,804,580.20, 920,706,870.30 and 368,916,567.40 is: 553,374,851.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,804,580.20 : 920,706,870.30 = 368,916,567.40 : x
  2. Step 2: Convert to fraction form
    613,804,580.20/920,706,870.30 = 368,916,567.40/x
  3. Step 3: Cross multiply
    613,804,580.20x = 920,706,870.30 × 368,916,567.40
  4. Step 4: Simplify right side
    613,804,580.20x = 339,664,018,172,672,960
  5. Step 5: Solve for x
    x = 339,664,018,172,672,960/613,804,580.20
  6. Step 6: Final answer
    x = 553,374,851.10

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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.