Home / 1,229,140.80-1,843,970.40-518,803.20

Finding the Fourth Proportional to 1,229,140.80, 1,843,970.40 and 518,803.20

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Solution

The fourth proportional to 1,229,140.80, 1,843,970.40 and 518,803.20 is: 778,314.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,229,140.80 : 1,843,970.40 = 518,803.20 : x
  2. Step 2: Convert to fraction form
    1,229,140.80/1,843,970.40 = 518,803.20/x
  3. Step 3: Cross multiply
    1,229,140.80x = 1,843,970.40 × 518,803.20
  4. Step 4: Simplify right side
    1,229,140.80x = 956,657,744,225.28
  5. Step 5: Solve for x
    x = 956,657,744,225.28/1,229,140.80
  6. Step 6: Final answer
    x = 778,314.20

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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.