Home / 420,977,355.30-630,509,439.15-266,009,159.70

Finding the Fourth Proportional to 420,977,355.30, 630,509,439.15 and 266,009,159.70

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Solution

The fourth proportional to 420,977,355.30, 630,509,439.15 and 266,009,159.70 is: 398,409,282.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,977,355.30 : 630,509,439.15 = 266,009,159.70 : x
  2. Step 2: Convert to fraction form
    420,977,355.30/630,509,439.15 = 266,009,159.70/x
  3. Step 3: Cross multiply
    420,977,355.30x = 630,509,439.15 × 266,009,159.70
  4. Step 4: Simplify right side
    420,977,355.30x = 167,721,286,091,209,760
  5. Step 5: Solve for x
    x = 167,721,286,091,209,760/420,977,355.30
  6. Step 6: Final answer
    x = 398,409,282.54

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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.