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Finding the Fourth Proportional to 630,332.80, 869,859.28 and 343,854.04

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Solution

The fourth proportional to 630,332.80, 869,859.28 and 343,854.04 is: 474,518.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,332.80 : 869,859.28 = 343,854.04 : x
  2. Step 2: Convert to fraction form
    630,332.80/869,859.28 = 343,854.04/x
  3. Step 3: Cross multiply
    630,332.80x = 869,859.28 × 343,854.04
  4. Step 4: Simplify right side
    630,332.80x = 299,104,627,659.49
  5. Step 5: Solve for x
    x = 299,104,627,659.49/630,332.80
  6. Step 6: Final answer
    x = 474,518.58

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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.