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Finding the Fourth Proportional to 630,423.99, 869,967.81 and 343,944

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Solution

The fourth proportional to 630,423.99, 869,967.81 and 343,944 is: 474,633.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,423.99 : 869,967.81 = 343,944 : x
  2. Step 2: Convert to fraction form
    630,423.99/869,967.81 = 343,944/x
  3. Step 3: Cross multiply
    630,423.99x = 869,967.81 × 343,944
  4. Step 4: Simplify right side
    630,423.99x = 299,220,208,442.64
  5. Step 5: Solve for x
    x = 299,220,208,442.64/630,423.99
  6. Step 6: Final answer
    x = 474,633.28

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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.