Home / 630,297.38-869,816.68-343,823.47

Finding the Fourth Proportional to 630,297.38, 869,816.68 and 343,823.47

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Solution

The fourth proportional to 630,297.38, 869,816.68 and 343,823.47 is: 474,479.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,297.38 : 869,816.68 = 343,823.47 : x
  2. Step 2: Convert to fraction form
    630,297.38/869,816.68 = 343,823.47/x
  3. Step 3: Cross multiply
    630,297.38x = 869,816.68 × 343,823.47
  4. Step 4: Simplify right side
    630,297.38x = 299,063,386,147.38
  5. Step 5: Solve for x
    x = 299,063,386,147.38/630,297.38
  6. Step 6: Final answer
    x = 474,479.82

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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.