Home / 818,681.32-1,228,153.38-345,436.48

Finding the Fourth Proportional to 818,681.32, 1,228,153.38 and 345,436.48

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Solution

The fourth proportional to 818,681.32, 1,228,153.38 and 345,436.48 is: 518,210.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    818,681.32 : 1,228,153.38 = 345,436.48 : x
  2. Step 2: Convert to fraction form
    818,681.32/1,228,153.38 = 345,436.48/x
  3. Step 3: Cross multiply
    818,681.32x = 1,228,153.38 × 345,436.48
  4. Step 4: Simplify right side
    818,681.32x = 424,248,980,487.30
  5. Step 5: Solve for x
    x = 424,248,980,487.30/818,681.32
  6. Step 6: Final answer
    x = 518,210.16

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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.