Home / 673,323.70-1,009,985.55-421,381.30

Finding the Fourth Proportional to 673,323.70, 1,009,985.55 and 421,381.30

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Solution

The fourth proportional to 673,323.70, 1,009,985.55 and 421,381.30 is: 632,071.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    673,323.70 : 1,009,985.55 = 421,381.30 : x
  2. Step 2: Convert to fraction form
    673,323.70/1,009,985.55 = 421,381.30/x
  3. Step 3: Cross multiply
    673,323.70x = 1,009,985.55 × 421,381.30
  4. Step 4: Simplify right side
    673,323.70x = 425,589,024,040.22
  5. Step 5: Solve for x
    x = 425,589,024,040.22/673,323.70
  6. Step 6: Final answer
    x = 632,071.95

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Double scale
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Similar ratio
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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.