Home / 778,961.80-1,168,442.70-763,215.40

Finding the Fourth Proportional to 778,961.80, 1,168,442.70 and 763,215.40

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Solution

The fourth proportional to 778,961.80, 1,168,442.70 and 763,215.40 is: 1,144,823.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,961.80 : 1,168,442.70 = 763,215.40 : x
  2. Step 2: Convert to fraction form
    778,961.80/1,168,442.70 = 763,215.40/x
  3. Step 3: Cross multiply
    778,961.80x = 1,168,442.70 × 763,215.40
  4. Step 4: Simplify right side
    778,961.80x = 891,773,462,657.58
  5. Step 5: Solve for x
    x = 891,773,462,657.58/778,961.80
  6. Step 6: Final answer
    x = 1,144,823.10

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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.