Home / 901,048.72-1,351,430.91-421,609.12

Finding the Fourth Proportional to 901,048.72, 1,351,430.91 and 421,609.12

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Solution

The fourth proportional to 901,048.72, 1,351,430.91 and 421,609.12 is: 632,347.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    901,048.72 : 1,351,430.91 = 421,609.12 : x
  2. Step 2: Convert to fraction form
    901,048.72/1,351,430.91 = 421,609.12/x
  3. Step 3: Cross multiply
    901,048.72x = 1,351,430.91 × 421,609.12
  4. Step 4: Simplify right side
    901,048.72x = 569,775,596,705.90
  5. Step 5: Solve for x
    x = 569,775,596,705.90/901,048.72
  6. Step 6: Final answer
    x = 632,347.16

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Double scale
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1.5x scale

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.