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Finding the Fourth Proportional to 630,135.04, 869,638.12 and 358,288.24

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Solution

The fourth proportional to 630,135.04, 869,638.12 and 358,288.24 is: 494,467.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,135.04 : 869,638.12 = 358,288.24 : x
  2. Step 2: Convert to fraction form
    630,135.04/869,638.12 = 358,288.24/x
  3. Step 3: Cross multiply
    630,135.04x = 869,638.12 × 358,288.24
  4. Step 4: Simplify right side
    630,135.04x = 311,581,111,451.71
  5. Step 5: Solve for x
    x = 311,581,111,451.71/630,135.04
  6. Step 6: Final answer
    x = 494,467.20

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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.