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Finding the Fourth Proportional to 577,485.53, 796,909.13 and 315,831.89

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Solution

The fourth proportional to 577,485.53, 796,909.13 and 315,831.89 is: 435,836.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    577,485.53 : 796,909.13 = 315,831.89 : x
  2. Step 2: Convert to fraction form
    577,485.53/796,909.13 = 315,831.89/x
  3. Step 3: Cross multiply
    577,485.53x = 796,909.13 × 315,831.89
  4. Step 4: Simplify right side
    577,485.53x = 251,689,316,686.16
  5. Step 5: Solve for x
    x = 251,689,316,686.16/577,485.53
  6. Step 6: Final answer
    x = 435,836.58

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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.