Home / 687,607.32-948,914.46-385,823.64

Finding the Fourth Proportional to 687,607.32, 948,914.46 and 385,823.64

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Solution

The fourth proportional to 687,607.32, 948,914.46 and 385,823.64 is: 532,445.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,607.32 : 948,914.46 = 385,823.64 : x
  2. Step 2: Convert to fraction form
    687,607.32/948,914.46 = 385,823.64/x
  3. Step 3: Cross multiply
    687,607.32x = 948,914.46 × 385,823.64
  4. Step 4: Simplify right side
    687,607.32x = 366,113,631,005.83
  5. Step 5: Solve for x
    x = 366,113,631,005.83/687,607.32
  6. Step 6: Final answer
    x = 532,445.80

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1.5x scale

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.