Home / 1,119,852,906.60-1,679,779,359.90-392,915,101.80

Finding the Fourth Proportional to 1,119,852,906.60, 1,679,779,359.90 and 392,915,101.80

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Solution

The fourth proportional to 1,119,852,906.60, 1,679,779,359.90 and 392,915,101.80 is: 589,372,652.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,119,852,906.60 : 1,679,779,359.90 = 392,915,101.80 : x
  2. Step 2: Convert to fraction form
    1,119,852,906.60/1,679,779,359.90 = 392,915,101.80/x
  3. Step 3: Cross multiply
    1,119,852,906.60x = 1,679,779,359.90 × 392,915,101.80
  4. Step 4: Simplify right side
    1,119,852,906.60x = 660,010,678,196,647,424
  5. Step 5: Solve for x
    x = 660,010,678,196,647,424/1,119,852,906.60
  6. Step 6: Final answer
    x = 589,372,652.70

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Double scale
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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.