Home / 780,342.09-1,076,945.94-490,001.46

Finding the Fourth Proportional to 780,342.09, 1,076,945.94 and 490,001.46

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Solution

The fourth proportional to 780,342.09, 1,076,945.94 and 490,001.46 is: 676,248.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,342.09 : 1,076,945.94 = 490,001.46 : x
  2. Step 2: Convert to fraction form
    780,342.09/1,076,945.94 = 490,001.46/x
  3. Step 3: Cross multiply
    780,342.09x = 1,076,945.94 × 490,001.46
  4. Step 4: Simplify right side
    780,342.09x = 527,705,082,941.07
  5. Step 5: Solve for x
    x = 527,705,082,941.07/780,342.09
  6. Step 6: Final answer
    x = 676,248.39

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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.