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Finding the Fourth Proportional to 674,391.51, 930,649.44 and 368,461.32

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Solution

The fourth proportional to 674,391.51, 930,649.44 and 368,461.32 is: 508,470.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    674,391.51 : 930,649.44 = 368,461.32 : x
  2. Step 2: Convert to fraction form
    674,391.51/930,649.44 = 368,461.32/x
  3. Step 3: Cross multiply
    674,391.51x = 930,649.44 × 368,461.32
  4. Step 4: Simplify right side
    674,391.51x = 342,908,321,119.66
  5. Step 5: Solve for x
    x = 342,908,321,119.66/674,391.51
  6. Step 6: Final answer
    x = 508,470.70

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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.