Home / 1,087,974,009,207.80-1,631,961,013,811.70-521,720,222,485.40

Finding the Fourth Proportional to 1,087,974,009,207.80, 1,631,961,013,811.70 and 521,720,222,485.40

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Solution

The fourth proportional to 1,087,974,009,207.80, 1,631,961,013,811.70 and 521,720,222,485.40 is: 782,580,333,728.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,087,974,009,207.80 : 1,631,961,013,811.70 = 521,720,222,485.40 : x
  2. Step 2: Convert to fraction form
    1,087,974,009,207.80/1,631,961,013,811.70 = 521,720,222,485.40/x
  3. Step 3: Cross multiply
    1,087,974,009,207.80x = 1,631,961,013,811.70 × 521,720,222,485.40
  4. Step 4: Simplify right side
    1,087,974,009,207.80x = 851,427,063,213,339,103,461,376
  5. Step 5: Solve for x
    x = 851,427,063,213,339,103,461,376/1,087,974,009,207.80
  6. Step 6: Final answer
    x = 782,580,333,728.10

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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.