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Finding the Fourth Proportional to 822,347.94, 1,134,980.43 and 478,383.48

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Solution

The fourth proportional to 822,347.94, 1,134,980.43 and 478,383.48 is: 660,250.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    822,347.94 : 1,134,980.43 = 478,383.48 : x
  2. Step 2: Convert to fraction form
    822,347.94/1,134,980.43 = 478,383.48/x
  3. Step 3: Cross multiply
    822,347.94x = 1,134,980.43 × 478,383.48
  4. Step 4: Simplify right side
    822,347.94x = 542,955,887,835.30
  5. Step 5: Solve for x
    x = 542,955,887,835.30/822,347.94
  6. Step 6: Final answer
    x = 660,250.80

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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.