Home / 630,448.12-869,982.76-358,582.15

Finding the Fourth Proportional to 630,448.12, 869,982.76 and 358,582.15

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Solution

The fourth proportional to 630,448.12, 869,982.76 and 358,582.15 is: 494,823.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,448.12 : 869,982.76 = 358,582.15 : x
  2. Step 2: Convert to fraction form
    630,448.12/869,982.76 = 358,582.15/x
  3. Step 3: Cross multiply
    630,448.12x = 869,982.76 × 358,582.15
  4. Step 4: Simplify right side
    630,448.12x = 311,960,288,543.73
  5. Step 5: Solve for x
    x = 311,960,288,543.73/630,448.12
  6. Step 6: Final answer
    x = 494,823.09

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Double scale
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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.