Home / 739,408.23-1,020,430.61-417,000.69

Finding the Fourth Proportional to 739,408.23, 1,020,430.61 and 417,000.69

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Solution

The fourth proportional to 739,408.23, 1,020,430.61 and 417,000.69 is: 575,487.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    739,408.23 : 1,020,430.61 = 417,000.69 : x
  2. Step 2: Convert to fraction form
    739,408.23/1,020,430.61 = 417,000.69/x
  3. Step 3: Cross multiply
    739,408.23x = 1,020,430.61 × 417,000.69
  4. Step 4: Simplify right side
    739,408.23x = 425,520,267,945.87
  5. Step 5: Solve for x
    x = 425,520,267,945.87/739,408.23
  6. Step 6: Final answer
    x = 575,487.60

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Half scale
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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.