Home / 457,816.90-687,053.40-257,925.10

Finding the Fourth Proportional to 457,816.90, 687,053.40 and 257,925.10

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Solution

The fourth proportional to 457,816.90, 687,053.40 and 257,925.10 is: 387,072.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,816.90 : 687,053.40 = 257,925.10 : x
  2. Step 2: Convert to fraction form
    457,816.90/687,053.40 = 257,925.10/x
  3. Step 3: Cross multiply
    457,816.90x = 687,053.40 × 257,925.10
  4. Step 4: Simplify right side
    457,816.90x = 177,208,316,900.34
  5. Step 5: Solve for x
    x = 177,208,316,900.34/457,816.90
  6. Step 6: Final answer
    x = 387,072.47

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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.