Home / 1,119,778,374.60-1,679,667,561.90-392,840,569.80

Finding the Fourth Proportional to 1,119,778,374.60, 1,679,667,561.90 and 392,840,569.80

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Solution

The fourth proportional to 1,119,778,374.60, 1,679,667,561.90 and 392,840,569.80 is: 589,260,854.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,119,778,374.60 : 1,679,667,561.90 = 392,840,569.80 : x
  2. Step 2: Convert to fraction form
    1,119,778,374.60/1,679,667,561.90 = 392,840,569.80/x
  3. Step 3: Cross multiply
    1,119,778,374.60x = 1,679,667,561.90 × 392,840,569.80
  4. Step 4: Simplify right side
    1,119,778,374.60x = 659,841,562,091,372,800
  5. Step 5: Solve for x
    x = 659,841,562,091,372,800/1,119,778,374.60
  6. Step 6: Final answer
    x = 589,260,854.70

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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.