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Finding the Fourth Proportional to 630,058.28, 869,646.18 and 358,285.48

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Solution

The fourth proportional to 630,058.28, 869,646.18 and 358,285.48 is: 494,528.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,058.28 : 869,646.18 = 358,285.48 : x
  2. Step 2: Convert to fraction form
    630,058.28/869,646.18 = 358,285.48/x
  3. Step 3: Cross multiply
    630,058.28x = 869,646.18 × 358,285.48
  4. Step 4: Simplify right side
    630,058.28x = 311,581,599,031.47
  5. Step 5: Solve for x
    x = 311,581,599,031.47/630,058.28
  6. Step 6: Final answer
    x = 494,528.22

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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.