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Finding the Fourth Proportional to 478,505.52, 660,332.34 and 274,588.52

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Solution

The fourth proportional to 478,505.52, 660,332.34 and 274,588.52 is: 378,929.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,505.52 : 660,332.34 = 274,588.52 : x
  2. Step 2: Convert to fraction form
    478,505.52/660,332.34 = 274,588.52/x
  3. Step 3: Cross multiply
    478,505.52x = 660,332.34 × 274,588.52
  4. Step 4: Simplify right side
    478,505.52x = 181,319,676,647.08
  5. Step 5: Solve for x
    x = 181,319,676,647.08/478,505.52
  6. Step 6: Final answer
    x = 378,929.12

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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.