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Finding the Fourth Proportional to 630,307.51, 869,830.65 and 343,833.59

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Solution

The fourth proportional to 630,307.51, 869,830.65 and 343,833.59 is: 474,493.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,307.51 : 869,830.65 = 343,833.59 : x
  2. Step 2: Convert to fraction form
    630,307.51/869,830.65 = 343,833.59/x
  3. Step 3: Cross multiply
    630,307.51x = 869,830.65 × 343,833.59
  4. Step 4: Simplify right side
    630,307.51x = 299,076,997,256.11
  5. Step 5: Solve for x
    x = 299,076,997,256.11/630,307.51
  6. Step 6: Final answer
    x = 474,493.79

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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.