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Finding the Fourth Proportional to 518,057.12, 714,229.44 and 388,444.16

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Solution

The fourth proportional to 518,057.12, 714,229.44 and 388,444.16 is: 535,536.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,057.12 : 714,229.44 = 388,444.16 : x
  2. Step 2: Convert to fraction form
    518,057.12/714,229.44 = 388,444.16/x
  3. Step 3: Cross multiply
    518,057.12x = 714,229.44 × 388,444.16
  4. Step 4: Simplify right side
    518,057.12x = 277,438,254,868.07
  5. Step 5: Solve for x
    x = 277,438,254,868.07/518,057.12
  6. Step 6: Final answer
    x = 535,536.03

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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.