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Finding the Fourth Proportional to 630,542.48, 870,167.79 and 358,649.48

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Solution

The fourth proportional to 630,542.48, 870,167.79 and 358,649.48 is: 494,947.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,542.48 : 870,167.79 = 358,649.48 : x
  2. Step 2: Convert to fraction form
    630,542.48/870,167.79 = 358,649.48/x
  3. Step 3: Cross multiply
    630,542.48x = 870,167.79 × 358,649.48
  4. Step 4: Simplify right side
    630,542.48x = 312,085,225,396.25
  5. Step 5: Solve for x
    x = 312,085,225,396.25/630,542.48
  6. Step 6: Final answer
    x = 494,947.18

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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.