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Finding the Fourth Proportional to 671,938.80, 927,275.58 and 370,132.80

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Solution

The fourth proportional to 671,938.80, 927,275.58 and 370,132.80 is: 510,783.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    671,938.80 : 927,275.58 = 370,132.80 : x
  2. Step 2: Convert to fraction form
    671,938.80/927,275.58 = 370,132.80/x
  3. Step 3: Cross multiply
    671,938.80x = 927,275.58 × 370,132.80
  4. Step 4: Simplify right side
    671,938.80x = 343,215,106,797.02
  5. Step 5: Solve for x
    x = 343,215,106,797.02/671,938.80
  6. Step 6: Final answer
    x = 510,783.28

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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.