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Finding the Fourth Proportional to 652,622.72, 900,621.84 and 380,878.32

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Solution

The fourth proportional to 652,622.72, 900,621.84 and 380,878.32 is: 525,613.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    652,622.72 : 900,621.84 = 380,878.32 : x
  2. Step 2: Convert to fraction form
    652,622.72/900,621.84 = 380,878.32/x
  3. Step 3: Cross multiply
    652,622.72x = 900,621.84 × 380,878.32
  4. Step 4: Simplify right side
    652,622.72x = 343,027,333,374.51
  5. Step 5: Solve for x
    x = 343,027,333,374.51/652,622.72
  6. Step 6: Final answer
    x = 525,613.53

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1.5x scale

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.