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Finding the Fourth Proportional to 630,109.29, 869,602.47 and 358,262.49

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Solution

The fourth proportional to 630,109.29, 869,602.47 and 358,262.49 is: 494,431.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,109.29 : 869,602.47 = 358,262.49 : x
  2. Step 2: Convert to fraction form
    630,109.29/869,602.47 = 358,262.49/x
  3. Step 3: Cross multiply
    630,109.29x = 869,602.47 × 358,262.49
  4. Step 4: Simplify right side
    630,109.29x = 311,545,946,212.35
  5. Step 5: Solve for x
    x = 311,545,946,212.35/630,109.29
  6. Step 6: Final answer
    x = 494,431.60

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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.