Home / 1,275,959.80-1,913,478.90-644,663.80

Finding the Fourth Proportional to 1,275,959.80, 1,913,478.90 and 644,663.80

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Solution

The fourth proportional to 1,275,959.80, 1,913,478.90 and 644,663.80 is: 966,762.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,275,959.80 : 1,913,478.90 = 644,663.80 : x
  2. Step 2: Convert to fraction form
    1,275,959.80/1,913,478.90 = 644,663.80/x
  3. Step 3: Cross multiply
    1,275,959.80x = 1,913,478.90 × 644,663.80
  4. Step 4: Simplify right side
    1,275,959.80x = 1,233,550,578,893.82
  5. Step 5: Solve for x
    x = 1,233,550,578,893.82/1,275,959.80
  6. Step 6: Final answer
    x = 966,762.89

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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.