Home / 917,804,821.10-1,376,705,511.09-287,585,128.23

Finding the Fourth Proportional to 917,804,821.10, 1,376,705,511.09 and 287,585,128.23

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Solution

The fourth proportional to 917,804,821.10, 1,376,705,511.09 and 287,585,128.23 is: 431,377,153.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    917,804,821.10 : 1,376,705,511.09 = 287,585,128.23 : x
  2. Step 2: Convert to fraction form
    917,804,821.10/1,376,705,511.09 = 287,585,128.23/x
  3. Step 3: Cross multiply
    917,804,821.10x = 1,376,705,511.09 × 287,585,128.23
  4. Step 4: Simplify right side
    917,804,821.10x = 395,920,030,941,765,312
  5. Step 5: Solve for x
    x = 395,920,030,941,765,312/917,804,821.10
  6. Step 6: Final answer
    x = 431,377,153.23

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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.