Home / 919,682.64-1,379,582.28-288,621.36

Finding the Fourth Proportional to 919,682.64, 1,379,582.28 and 288,621.36

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Solution

The fourth proportional to 919,682.64, 1,379,582.28 and 288,621.36 is: 432,950.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,682.64 : 1,379,582.28 = 288,621.36 : x
  2. Step 2: Convert to fraction form
    919,682.64/1,379,582.28 = 288,621.36/x
  3. Step 3: Cross multiply
    919,682.64x = 1,379,582.28 × 288,621.36
  4. Step 4: Simplify right side
    919,682.64x = 398,176,913,885.50
  5. Step 5: Solve for x
    x = 398,176,913,885.50/919,682.64
  6. Step 6: Final answer
    x = 432,950.34

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1.5x scale

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.