Home / 660,320,534.40-990,480,801.60-650,116,867.20

Finding the Fourth Proportional to 660,320,534.40, 990,480,801.60 and 650,116,867.20

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Solution

The fourth proportional to 660,320,534.40, 990,480,801.60 and 650,116,867.20 is: 975,175,300.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,320,534.40 : 990,480,801.60 = 650,116,867.20 : x
  2. Step 2: Convert to fraction form
    660,320,534.40/990,480,801.60 = 650,116,867.20/x
  3. Step 3: Cross multiply
    660,320,534.40x = 990,480,801.60 × 650,116,867.20
  4. Step 4: Simplify right side
    660,320,534.40x = 643,928,275,757,936,768
  5. Step 5: Solve for x
    x = 643,928,275,757,936,768/660,320,534.40
  6. Step 6: Final answer
    x = 975,175,300.80

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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.