Home / 918,007.80-1,377,011.70-776,290.20

Finding the Fourth Proportional to 918,007.80, 1,377,011.70 and 776,290.20

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Solution

The fourth proportional to 918,007.80, 1,377,011.70 and 776,290.20 is: 1,164,435.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,007.80 : 1,377,011.70 = 776,290.20 : x
  2. Step 2: Convert to fraction form
    918,007.80/1,377,011.70 = 776,290.20/x
  3. Step 3: Cross multiply
    918,007.80x = 1,377,011.70 × 776,290.20
  4. Step 4: Simplify right side
    918,007.80x = 1,068,960,687,995.34
  5. Step 5: Solve for x
    x = 1,068,960,687,995.34/918,007.80
  6. Step 6: Final answer
    x = 1,164,435.30

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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.