Home / 1,126,669,121.60-1,687,736,200.80-782,011,918.40

Finding the Fourth Proportional to 1,126,669,121.60, 1,687,736,200.80 and 782,011,918.40

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Solution

The fourth proportional to 1,126,669,121.60, 1,687,736,200.80 and 782,011,918.40 is: 1,171,444,036.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,126,669,121.60 : 1,687,736,200.80 = 782,011,918.40 : x
  2. Step 2: Convert to fraction form
    1,126,669,121.60/1,687,736,200.80 = 782,011,918.40/x
  3. Step 3: Cross multiply
    1,126,669,121.60x = 1,687,736,200.80 × 782,011,918.40
  4. Step 4: Simplify right side
    1,126,669,121.60x = 1,319,829,824,140,735,488
  5. Step 5: Solve for x
    x = 1,319,829,824,140,735,488/1,126,669,121.60
  6. Step 6: Final answer
    x = 1,171,444,036.97

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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.