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Finding the Fourth Proportional to 630,796.11, 870,468.22 and 358,838.40

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Solution

The fourth proportional to 630,796.11, 870,468.22 and 358,838.40 is: 495,179.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,796.11 : 870,468.22 = 358,838.40 : x
  2. Step 2: Convert to fraction form
    630,796.11/870,468.22 = 358,838.40/x
  3. Step 3: Cross multiply
    630,796.11x = 870,468.22 × 358,838.40
  4. Step 4: Simplify right side
    630,796.11x = 312,357,427,028.45
  5. Step 5: Solve for x
    x = 312,357,427,028.45/630,796.11
  6. Step 6: Final answer
    x = 495,179.70

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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.