Home / 1,432,355.28-1,976,663.70-778,987.41

Finding the Fourth Proportional to 1,432,355.28, 1,976,663.70 and 778,987.41

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Solution

The fourth proportional to 1,432,355.28, 1,976,663.70 and 778,987.41 is: 1,075,009.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,432,355.28 : 1,976,663.70 = 778,987.41 : x
  2. Step 2: Convert to fraction form
    1,432,355.28/1,976,663.70 = 778,987.41/x
  3. Step 3: Cross multiply
    1,432,355.28x = 1,976,663.70 × 778,987.41
  4. Step 4: Simplify right side
    1,432,355.28x = 1,539,796,136,104.02
  5. Step 5: Solve for x
    x = 1,539,796,136,104.02/1,432,355.28
  6. Step 6: Final answer
    x = 1,075,009.92

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.