Home / 509,965,512.30-764,948,268.45-407,928,840.30

Finding the Fourth Proportional to 509,965,512.30, 764,948,268.45 and 407,928,840.30

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Solution

The fourth proportional to 509,965,512.30, 764,948,268.45 and 407,928,840.30 is: 611,893,260.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,965,512.30 : 764,948,268.45 = 407,928,840.30 : x
  2. Step 2: Convert to fraction form
    509,965,512.30/764,948,268.45 = 407,928,840.30/x
  3. Step 3: Cross multiply
    509,965,512.30x = 764,948,268.45 × 407,928,840.30
  4. Step 4: Simplify right side
    509,965,512.30x = 312,044,460,038,301,632
  5. Step 5: Solve for x
    x = 312,044,460,038,301,632/509,965,512.30
  6. Step 6: Final answer
    x = 611,893,260.45

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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.