Home / 630,214.72-869,876.16-358,429.12

Finding the Fourth Proportional to 630,214.72, 869,876.16 and 358,429.12

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Solution

The fourth proportional to 630,214.72, 869,876.16 and 358,429.12 is: 494,734.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,214.72 : 869,876.16 = 358,429.12 : x
  2. Step 2: Convert to fraction form
    630,214.72/869,876.16 = 358,429.12/x
  3. Step 3: Cross multiply
    630,214.72x = 869,876.16 × 358,429.12
  4. Step 4: Simplify right side
    630,214.72x = 311,788,946,537.78
  5. Step 5: Solve for x
    x = 311,788,946,537.78/630,214.72
  6. Step 6: Final answer
    x = 494,734.47

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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.