Home / 511,244,915.40-766,867,373.10-390,312,563.40

Finding the Fourth Proportional to 511,244,915.40, 766,867,373.10 and 390,312,563.40

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Solution

The fourth proportional to 511,244,915.40, 766,867,373.10 and 390,312,563.40 is: 585,468,845.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,244,915.40 : 766,867,373.10 = 390,312,563.40 : x
  2. Step 2: Convert to fraction form
    511,244,915.40/766,867,373.10 = 390,312,563.40/x
  3. Step 3: Cross multiply
    511,244,915.40x = 766,867,373.10 × 390,312,563.40
  4. Step 4: Simplify right side
    511,244,915.40x = 299,317,970,182,485,184
  5. Step 5: Solve for x
    x = 299,317,970,182,485,184/511,244,915.40
  6. Step 6: Final answer
    x = 585,468,845.10

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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.