Home / 440,116,280.40-660,174,420.60-287,061,272.40

Finding the Fourth Proportional to 440,116,280.40, 660,174,420.60 and 287,061,272.40

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Solution

The fourth proportional to 440,116,280.40, 660,174,420.60 and 287,061,272.40 is: 430,591,908.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,116,280.40 : 660,174,420.60 = 287,061,272.40 : x
  2. Step 2: Convert to fraction form
    440,116,280.40/660,174,420.60 = 287,061,272.40/x
  3. Step 3: Cross multiply
    440,116,280.40x = 660,174,420.60 × 287,061,272.40
  4. Step 4: Simplify right side
    440,116,280.40x = 189,510,509,183,368,768
  5. Step 5: Solve for x
    x = 189,510,509,183,368,768/440,116,280.40
  6. Step 6: Final answer
    x = 430,591,908.60

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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.