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Finding the Fourth Proportional to 478,500.51, 660,426.03 and 274,689.12

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Solution

The fourth proportional to 478,500.51, 660,426.03 and 274,689.12 is: 379,125.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,500.51 : 660,426.03 = 274,689.12 : x
  2. Step 2: Convert to fraction form
    478,500.51/660,426.03 = 274,689.12/x
  3. Step 3: Cross multiply
    478,500.51x = 660,426.03 × 274,689.12
  4. Step 4: Simplify right side
    478,500.51x = 181,411,845,005.79
  5. Step 5: Solve for x
    x = 181,411,845,005.79/478,500.51
  6. Step 6: Final answer
    x = 379,125.71

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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.