Home / 918,584,966.40-1,377,877,449.60-660,304,640.40

Finding the Fourth Proportional to 918,584,966.40, 1,377,877,449.60 and 660,304,640.40

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Solution

The fourth proportional to 918,584,966.40, 1,377,877,449.60 and 660,304,640.40 is: 990,456,960.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,584,966.40 : 1,377,877,449.60 = 660,304,640.40 : x
  2. Step 2: Convert to fraction form
    918,584,966.40/1,377,877,449.60 = 660,304,640.40/x
  3. Step 3: Cross multiply
    918,584,966.40x = 1,377,877,449.60 × 660,304,640.40
  4. Step 4: Simplify right side
    918,584,966.40x = 909,818,873,873,396,992
  5. Step 5: Solve for x
    x = 909,818,873,873,396,992/918,584,966.40
  6. Step 6: Final answer
    x = 990,456,960.60

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Double scale
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Similar ratio
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1.5x scale

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.