Home / 918,457,619.60-1,377,686,429.40-660,177,293.60

Finding the Fourth Proportional to 918,457,619.60, 1,377,686,429.40 and 660,177,293.60

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Solution

The fourth proportional to 918,457,619.60, 1,377,686,429.40 and 660,177,293.60 is: 990,265,940.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,457,619.60 : 1,377,686,429.40 = 660,177,293.60 : x
  2. Step 2: Convert to fraction form
    918,457,619.60/1,377,686,429.40 = 660,177,293.60/x
  3. Step 3: Cross multiply
    918,457,619.60x = 1,377,686,429.40 × 660,177,293.60
  4. Step 4: Simplify right side
    918,457,619.60x = 909,517,298,390,739,584
  5. Step 5: Solve for x
    x = 909,517,298,390,739,584/918,457,619.60
  6. Step 6: Final answer
    x = 990,265,940.40

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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.