Home / 668,841.15-1,003,261.73-385,405.95

Finding the Fourth Proportional to 668,841.15, 1,003,261.73 and 385,405.95

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Solution

The fourth proportional to 668,841.15, 1,003,261.73 and 385,405.95 is: 578,108.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,841.15 : 1,003,261.73 = 385,405.95 : x
  2. Step 2: Convert to fraction form
    668,841.15/1,003,261.73 = 385,405.95/x
  3. Step 3: Cross multiply
    668,841.15x = 1,003,261.73 × 385,405.95
  4. Step 4: Simplify right side
    668,841.15x = 386,663,038,222.26
  5. Step 5: Solve for x
    x = 386,663,038,222.26/668,841.15
  6. Step 6: Final answer
    x = 578,108.93

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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.