Home / 400,589,947.08-551,529,315.12-312,370,741.08

Finding the Fourth Proportional to 400,589,947.08, 551,529,315.12 and 312,370,741.08

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Solution

The fourth proportional to 400,589,947.08, 551,529,315.12 and 312,370,741.08 is: 430,069,756.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,589,947.08 : 551,529,315.12 = 312,370,741.08 : x
  2. Step 2: Convert to fraction form
    400,589,947.08/551,529,315.12 = 312,370,741.08/x
  3. Step 3: Cross multiply
    400,589,947.08x = 551,529,315.12 × 312,370,741.08
  4. Step 4: Simplify right side
    400,589,947.08x = 172,281,620,891,379,232
  5. Step 5: Solve for x
    x = 172,281,620,891,379,232/400,589,947.08
  6. Step 6: Final answer
    x = 430,069,756.24

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.