Home / 630,336.17-869,905.01-358,429.36

Finding the Fourth Proportional to 630,336.17, 869,905.01 and 358,429.36

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Solution

The fourth proportional to 630,336.17, 869,905.01 and 358,429.36 is: 494,655.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,336.17 : 869,905.01 = 358,429.36 : x
  2. Step 2: Convert to fraction form
    630,336.17/869,905.01 = 358,429.36/x
  3. Step 3: Cross multiply
    630,336.17x = 869,905.01 × 358,429.36
  4. Step 4: Simplify right side
    630,336.17x = 311,799,495,995.09
  5. Step 5: Solve for x
    x = 311,799,495,995.09/630,336.17
  6. Step 6: Final answer
    x = 494,655.88

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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.