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Finding the Fourth Proportional to 671,146.16, 926,181.83 and 369,340.16

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Solution

The fourth proportional to 671,146.16, 926,181.83 and 369,340.16 is: 509,689.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    671,146.16 : 926,181.83 = 369,340.16 : x
  2. Step 2: Convert to fraction form
    671,146.16/926,181.83 = 369,340.16/x
  3. Step 3: Cross multiply
    671,146.16x = 926,181.83 × 369,340.16
  4. Step 4: Simplify right side
    671,146.16x = 342,076,145,281.29
  5. Step 5: Solve for x
    x = 342,076,145,281.29/671,146.16
  6. Step 6: Final answer
    x = 509,689.49

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Double scale
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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.