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Finding the Fourth Proportional to 630,048.34, 869,435.12 and 358,080.30

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Solution

The fourth proportional to 630,048.34, 869,435.12 and 358,080.30 is: 494,132.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,048.34 : 869,435.12 = 358,080.30 : x
  2. Step 2: Convert to fraction form
    630,048.34/869,435.12 = 358,080.30/x
  3. Step 3: Cross multiply
    630,048.34x = 869,435.12 × 358,080.30
  4. Step 4: Simplify right side
    630,048.34x = 311,327,588,600.14
  5. Step 5: Solve for x
    x = 311,327,588,600.14/630,048.34
  6. Step 6: Final answer
    x = 494,132.86

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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.