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Finding the Fourth Proportional to 673,354.32, 930,460.80 and 640,552.56

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Solution

The fourth proportional to 673,354.32, 930,460.80 and 640,552.56 is: 885,134.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    673,354.32 : 930,460.80 = 640,552.56 : x
  2. Step 2: Convert to fraction form
    673,354.32/930,460.80 = 640,552.56/x
  3. Step 3: Cross multiply
    673,354.32x = 930,460.80 × 640,552.56
  4. Step 4: Simplify right side
    673,354.32x = 596,009,047,419.65
  5. Step 5: Solve for x
    x = 596,009,047,419.65/673,354.32
  6. Step 6: Final answer
    x = 885,134.36

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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.