Home / 1,487,776.20-2,231,664.30-778,021.80

Finding the Fourth Proportional to 1,487,776.20, 2,231,664.30 and 778,021.80

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Solution

The fourth proportional to 1,487,776.20, 2,231,664.30 and 778,021.80 is: 1,167,032.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,487,776.20 : 2,231,664.30 = 778,021.80 : x
  2. Step 2: Convert to fraction form
    1,487,776.20/2,231,664.30 = 778,021.80/x
  3. Step 3: Cross multiply
    1,487,776.20x = 2,231,664.30 × 778,021.80
  4. Step 4: Simplify right side
    1,487,776.20x = 1,736,283,475,681.74
  5. Step 5: Solve for x
    x = 1,736,283,475,681.74/1,487,776.20
  6. Step 6: Final answer
    x = 1,167,032.70

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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.