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Finding the Fourth Proportional to 610,285.12, 842,240.16 and 384,124.48

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Solution

The fourth proportional to 610,285.12, 842,240.16 and 384,124.48 is: 530,121.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,285.12 : 842,240.16 = 384,124.48 : x
  2. Step 2: Convert to fraction form
    610,285.12/842,240.16 = 384,124.48/x
  3. Step 3: Cross multiply
    610,285.12x = 842,240.16 × 384,124.48
  4. Step 4: Simplify right side
    610,285.12x = 323,525,063,495.12
  5. Step 5: Solve for x
    x = 323,525,063,495.12/610,285.12
  6. Step 6: Final answer
    x = 530,121.17

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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.