Home / 1,220,510.32-1,684,403.70-676,816.60

Finding the Fourth Proportional to 1,220,510.32, 1,684,403.70 and 676,816.60

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Solution

The fourth proportional to 1,220,510.32, 1,684,403.70 and 676,816.60 is: 934,062.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,220,510.32 : 1,684,403.70 = 676,816.60 : x
  2. Step 2: Convert to fraction form
    1,220,510.32/1,684,403.70 = 676,816.60/x
  3. Step 3: Cross multiply
    1,220,510.32x = 1,684,403.70 × 676,816.60
  4. Step 4: Simplify right side
    1,220,510.32x = 1,140,032,385,261.42
  5. Step 5: Solve for x
    x = 1,140,032,385,261.42/1,220,510.32
  6. Step 6: Final answer
    x = 934,062.06

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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.