Home / 778,095.48-1,165,262.28-643,988.64

Finding the Fourth Proportional to 778,095.48, 1,165,262.28 and 643,988.64

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Solution

The fourth proportional to 778,095.48, 1,165,262.28 and 643,988.64 is: 964,426.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,095.48 : 1,165,262.28 = 643,988.64 : x
  2. Step 2: Convert to fraction form
    778,095.48/1,165,262.28 = 643,988.64/x
  3. Step 3: Cross multiply
    778,095.48x = 1,165,262.28 × 643,988.64
  4. Step 4: Simplify right side
    778,095.48x = 750,415,670,940.50
  5. Step 5: Solve for x
    x = 750,415,670,940.50/778,095.48
  6. Step 6: Final answer
    x = 964,426.21

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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.