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Finding the Fourth Proportional to 630,520.74, 870,137.81 and 358,627.77

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Solution

The fourth proportional to 630,520.74, 870,137.81 and 358,627.77 is: 494,917.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,520.74 : 870,137.81 = 358,627.77 : x
  2. Step 2: Convert to fraction form
    630,520.74/870,137.81 = 358,627.77/x
  3. Step 3: Cross multiply
    630,520.74x = 870,137.81 × 358,627.77
  4. Step 4: Simplify right side
    630,520.74x = 312,055,581,944.70
  5. Step 5: Solve for x
    x = 312,055,581,944.70/630,520.74
  6. Step 6: Final answer
    x = 494,917.24

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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.