Home / 726,767,785.80-1,090,151,678.70-420,657,769.80

Finding the Fourth Proportional to 726,767,785.80, 1,090,151,678.70 and 420,657,769.80

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Solution

The fourth proportional to 726,767,785.80, 1,090,151,678.70 and 420,657,769.80 is: 630,986,654.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    726,767,785.80 : 1,090,151,678.70 = 420,657,769.80 : x
  2. Step 2: Convert to fraction form
    726,767,785.80/1,090,151,678.70 = 420,657,769.80/x
  3. Step 3: Cross multiply
    726,767,785.80x = 1,090,151,678.70 × 420,657,769.80
  4. Step 4: Simplify right side
    726,767,785.80x = 458,580,773,905,668,224
  5. Step 5: Solve for x
    x = 458,580,773,905,668,224/726,767,785.80
  6. Step 6: Final answer
    x = 630,986,654.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.